diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/core/FlowExecutor.java b/liteflow-core/src/main/java/com/yomahub/liteflow/core/FlowExecutor.java
index fc8a09c4a..3e3bc8db1 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/core/FlowExecutor.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/core/FlowExecutor.java
@@ -45,8 +45,6 @@ public class FlowExecutor {
 
 	private LiteflowConfig liteflowConfig;
 
-	private ExecutorService parallelExecutor;
-
 	private String zkNode;
 
 	//FlowExecutor的初始化化方式，主要用于parse规则文件
@@ -130,10 +128,6 @@ public class FlowExecutor {
 			throw new ChainNotFoundException(errorMsg);
 		}
 
-		if (parallelExecutor != null) {
-			chain.setParallelExecutor(parallelExecutor);
-		}
-
 		if(!isInnerChain && slotIndex == null) {
 			slotIndex = DataBus.offerSlot(slotClazz);
 			LOG.info("slot[{}] offered",slotIndex);
@@ -192,11 +186,4 @@ public class FlowExecutor {
 		this.liteflowConfig = liteflowConfig;
 	}
 
-	public ExecutorService getParallelExecutor() {
-		return parallelExecutor;
-	}
-
-	public void setParallelExecutor(ExecutorService parallelExecutor) {
-		this.parallelExecutor = parallelExecutor;
-	}
 }
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/Chain.java b/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/Chain.java
index 014ccc340..f6433dc7c 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/Chain.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/Chain.java
@@ -40,8 +40,6 @@ public class Chain implements Executable {
 
     private static int whenMaxWaitSeconds;
 
-    private ExecutorService parallelExecutor;
-
     static {
         LiteflowConfig liteflowConfig = SpringAware.getBean(LiteflowConfig.class);
         if (ObjectUtil.isNotNull(liteflowConfig)) {
@@ -56,14 +54,6 @@ public class Chain implements Executable {
         this.conditionList = conditionList;
     }
 
-    public ExecutorService getParallelExecutor() {
-        return parallelExecutor;
-    }
-
-    public void setParallelExecutor(ExecutorService parallelExecutor) {
-        this.parallelExecutor = parallelExecutor;
-    }
-
     public List<Condition> getConditionList() {
         return conditionList;
     }
@@ -101,18 +91,8 @@ public class Chain implements Executable {
                     }
                 }
             } else if (condition instanceof WhenCondition) {
-                /**
-                 for (Executable executableItem : condition.getNodeList()) {
-                 * 设置了线程池且当前condition isSync = true时，使用异步线程池执行
-                 new WhenConditionThread(executableItem, slotIndex, slot.getRequestId(), latch).start();
-                 */
-                if (((WhenCondition) condition).isASync() && parallelExecutor != null) {
-                    executeAsyncCondition((WhenCondition) condition, slotIndex, slot.getRequestId());
-                } else {
-                    for (Executable executableItem : condition.getNodeList()) {
-                        executableItem.execute(slotIndex);
-                    }
-                }
+
+                executeAsyncCondition((WhenCondition) condition, slotIndex, slot.getRequestId());
             }
         }
     }
@@ -128,16 +108,14 @@ public class Chain implements Executable {
     }
 
 
-    /**
-     * 使用线程池执行并发流程
-     * @param condition
-     * @param slotIndex
-     * @param requestId
-     */
+    //  使用线程池执行when并发流程
     private void executeAsyncCondition(WhenCondition condition, Integer slotIndex, String requestId) {
+        ExecutorService parallelExecutor = SpringAware.getBean(ExecutorService.class);
+
         final CountDownLatch latch = new CountDownLatch(condition.getNodeList().size());
         final List<Future<Boolean>> futures = new ArrayList<>(condition.getNodeList().size());
 
+
         for (int i = 0; i < condition.getNodeList().size(); i++) {
             futures.add(parallelExecutor.submit(
                     new ParallelCondition(condition.getNodeList().get(i), slotIndex, requestId, latch)
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/WhenCondition.java b/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/WhenCondition.java
index da80489a5..b2ccd929c 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/WhenCondition.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/WhenCondition.java
@@ -14,21 +14,8 @@ import java.util.List;
  * @author Bryan.Zhang
  */
 public class WhenCondition extends Condition{
-	/**
-	 * 增加isSync属性，以区分是循序执行还是并发执行
-	 */
-	private boolean isASync;
 
 	public WhenCondition(List<Executable> nodeList) {
 		super(nodeList);
-		isASync = true;
-	}
-	public WhenCondition(List<Executable> nodeList, boolean isASync) {
-		super(nodeList);
-		this.isASync = isASync;
-	}
-
-	public boolean isASync() {
-		return isASync;
 	}
 }
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/parser/XmlFlowParser.java b/liteflow-core/src/main/java/com/yomahub/liteflow/parser/XmlFlowParser.java
index 606c5cddf..372524838 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/parser/XmlFlowParser.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/parser/XmlFlowParser.java
@@ -22,7 +22,6 @@ import org.slf4j.LoggerFactory;
 import com.yomahub.liteflow.core.NodeComponent;
 import com.yomahub.liteflow.flow.FlowBus;
 import com.yomahub.liteflow.spring.ComponentScaner;
-import org.dom4j.Attribute;
 
 /**
  * xml形式的解析器
@@ -140,15 +139,7 @@ public abstract class XmlFlowParser {
 			if (condE.getName().equals("then")) {
 				conditionList.add(new ThenCondition(chainNodeList));
 			} else if (condE.getName().equals("when")) {
-				/**
-				 * 设置是否为async异步
-				 */
-				Attribute isSync = condE.attribute("async");
-				if (isSync != null) {
-					conditionList.add(new WhenCondition(chainNodeList, isSync.getValue().equals("true")));
-				} else {
-					conditionList.add(new WhenCondition(chainNodeList));
-				}
+				conditionList.add(new WhenCondition(chainNodeList));
 			}
 		}
 		FlowBus.addChain(chainName, new Chain(chainName,conditionList));
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/property/LiteflowConfig.java b/liteflow-core/src/main/java/com/yomahub/liteflow/property/LiteflowConfig.java
index 513704519..12b62aef3 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/property/LiteflowConfig.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/property/LiteflowConfig.java
@@ -34,6 +34,12 @@ public class LiteflowConfig {
     //每隔多少秒打印
     private Long period;
 
+    //异步线程池最大线程数
+    private int whenMaxWorkers;
+
+    //异步线程池最大队列数量
+    private int whenQueueLimit;
+
     public String getRuleSource() {
         return ruleSource;
     }
@@ -89,4 +95,20 @@ public class LiteflowConfig {
     public void setEnableLog(Boolean enableLog) {
         this.enableLog = enableLog;
     }
+
+    public int getWhenMaxWorkers() {
+        return whenMaxWorkers;
+    }
+
+    public void setWhenMaxWorkers(int whenMaxWorkers) {
+        this.whenMaxWorkers = whenMaxWorkers;
+    }
+
+    public int getWhenQueueLimit() {
+        return whenQueueLimit;
+    }
+
+    public void setWhenQueueLimit(int whenQueueLimit) {
+        this.whenQueueLimit = whenQueueLimit;
+    }
 }
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/util/ExecutorHelper.java b/liteflow-core/src/main/java/com/yomahub/liteflow/util/ExecutorHelper.java
index 7438ea303..a381ec7cb 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/util/ExecutorHelper.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/util/ExecutorHelper.java
@@ -1,15 +1,19 @@
+/**
+ * <p>Title: liteflow</p>
+ * <p>Description: 轻量级的组件式流程框架</p>
+ * @author Bryan.Zhang
+ * @email weenyc31@163.com
+ * @Date 2020/4/1
+ */
 package com.yomahub.liteflow.util;
 
 import java.util.concurrent.*;
 import java.util.concurrent.atomic.AtomicLong;
 
+
 /**
- * desc :
- * name : ExecutorHelper
- *
- * @author : xujia
- * date : 2021/3/24
- * @since : 1.8
+ * 线程池工具类
+ * @author justin.xu
  */
 public class ExecutorHelper {
 
diff --git a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowExecutorAutoConfiguration.java b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowExecutorAutoConfiguration.java
index 1a337697f..6f6785e3b 100644
--- a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowExecutorAutoConfiguration.java
+++ b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowExecutorAutoConfiguration.java
@@ -1,30 +1,28 @@
 package com.yomahub.liteflow.springboot;
 
-import org.springframework.beans.factory.annotation.Value;
+import com.yomahub.liteflow.property.LiteflowConfig;
+import com.yomahub.liteflow.util.ExecutorHelper;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 import java.util.concurrent.ExecutorService;
 
-import static com.yomahub.liteflow.util.ExecutorHelper.buildExecutor;
-
 /**
- * desc :
- * name : LiteflowExecutorAutoConfiguration
- *
- * @author : xujia
- * date : 2021/3/24
- * @since : 1.8
+ * 线程池装配类
+ * 这个装配前置条件是需要LiteflowConfig，LiteflowPropertyAutoConfiguration以及SpringAware
+ * @author justin.xu
  */
 @Configuration
+@ConditionalOnBean(LiteflowConfig.class)
+@AutoConfigureAfter({LiteflowPropertyAutoConfiguration.class})
 public class LiteflowExecutorAutoConfiguration {
 
-    @Bean("parallelExecutor")
-    public ExecutorService parallelExecutor(
-            @Value("${threadPool.parallel.worker:0}") int worker,
-            @Value("${threadPool.parallel.queue:512}") int queue) {
-        int useWorker = worker;
-        int useQueue = queue;
+    @Bean
+    public ExecutorService executorService(LiteflowConfig liteflowConfig) {
+        int useWorker = liteflowConfig.getWhenMaxWorkers();
+        int useQueue = liteflowConfig.getWhenQueueLimit();
         if (useWorker == 0) {
             useWorker = Runtime.getRuntime().availableProcessors() + 1;
         }
@@ -33,6 +31,6 @@ public class LiteflowExecutorAutoConfiguration {
             useQueue = 512;
         }
 
-        return buildExecutor(useWorker, useQueue, "parallel-executors", false);
+        return ExecutorHelper.buildExecutor(useWorker, useQueue, "liteflow-when-calls", false);
     }
 }
diff --git a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowMainAutoConfiguration.java b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowMainAutoConfiguration.java
index ff64e6166..19deb7ebc 100644
--- a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowMainAutoConfiguration.java
+++ b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowMainAutoConfiguration.java
@@ -1,26 +1,15 @@
 package com.yomahub.liteflow.springboot;
 
 import cn.hutool.core.util.StrUtil;
-import com.google.common.collect.Lists;
 import com.yomahub.liteflow.core.FlowExecutor;
-import com.yomahub.liteflow.entity.data.DataBus;
 import com.yomahub.liteflow.monitor.MonitorBus;
 import com.yomahub.liteflow.property.LiteflowConfig;
-import com.yomahub.liteflow.spring.ComponentScaner;
 import com.yomahub.liteflow.util.SpringAware;
-import org.apache.commons.lang3.StringUtils;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
-import org.springframework.context.annotation.PropertySource;
-
-import javax.swing.*;
-import java.util.List;
-import java.util.concurrent.ExecutorService;
 
 /**
  * 主要的业务装配器
@@ -30,16 +19,15 @@ import java.util.concurrent.ExecutorService;
  */
 @Configuration
 @ConditionalOnBean(LiteflowConfig.class)
-@AutoConfigureAfter({LiteflowPropertyAutoConfiguration.class, LiteflowExecutorAutoConfiguration.class})
+@AutoConfigureAfter({LiteflowPropertyAutoConfiguration.class})
 @Import(SpringAware.class)
 public class LiteflowMainAutoConfiguration {
 
     @Bean
-    public FlowExecutor flowExecutor(LiteflowConfig liteflowConfig, ExecutorService parallelExecutor){
+    public FlowExecutor flowExecutor(LiteflowConfig liteflowConfig){
         if(StrUtil.isNotBlank(liteflowConfig.getRuleSource())){
             FlowExecutor flowExecutor = new FlowExecutor();
             flowExecutor.setLiteflowConfig(liteflowConfig);
-            flowExecutor.setParallelExecutor(parallelExecutor);
             return flowExecutor;
         }else{
             return null;
diff --git a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowProperty.java b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowProperty.java
index 0a6ddbc09..8f538eb48 100644
--- a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowProperty.java
+++ b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowProperty.java
@@ -18,6 +18,12 @@ public class LiteflowProperty {
     //异步线程最大等待描述
     private int whenMaxWaitSeconds;
 
+    //异步线程池最大线程数
+    private int whenMaxWorkers;
+
+    //异步线程池最大队列数量
+    private int whenQueueLimit;
+
     public String getRuleSource() {
         return ruleSource;
     }
@@ -41,4 +47,20 @@ public class LiteflowProperty {
     public void setWhenMaxWaitSeconds(int whenMaxWaitSeconds) {
         this.whenMaxWaitSeconds = whenMaxWaitSeconds;
     }
+
+    public int getWhenMaxWorkers() {
+        return whenMaxWorkers;
+    }
+
+    public void setWhenMaxWorkers(int whenMaxWorkers) {
+        this.whenMaxWorkers = whenMaxWorkers;
+    }
+
+    public int getWhenQueueLimit() {
+        return whenQueueLimit;
+    }
+
+    public void setWhenQueueLimit(int whenQueueLimit) {
+        this.whenQueueLimit = whenQueueLimit;
+    }
 }
diff --git a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowPropertyAutoConfiguration.java b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowPropertyAutoConfiguration.java
index e43d14842..6d773f3e3 100644
--- a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowPropertyAutoConfiguration.java
+++ b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowPropertyAutoConfiguration.java
@@ -31,6 +31,8 @@ public class LiteflowPropertyAutoConfiguration {
         liteflowConfig.setQueueLimit(liteflowMonitorProperty.getQueueLimit());
         liteflowConfig.setDelay(liteflowMonitorProperty.getDelay());
         liteflowConfig.setPeriod(liteflowMonitorProperty.getPeriod());
+        liteflowConfig.setWhenMaxWorkers(property.getWhenMaxWorkers());
+        liteflowConfig.setWhenQueueLimit(property.getWhenQueueLimit());
         return liteflowConfig;
     }
 }
diff --git a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/Shutdown.java b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/Shutdown.java
index 07096eabb..9450ed6c4 100644
--- a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/Shutdown.java
+++ b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/Shutdown.java
@@ -11,12 +11,9 @@ import javax.annotation.Resource;
 import java.util.concurrent.ExecutorService;
 
 /**
- * desc :
- * name : Shutdown
- *
- * @author : xujia
- * date : 2021/3/24
- * @since : 1.8
+ * 关闭shutdown类
+ * 执行清理工作
+ * @author justin.xu
  */
 @Order(Integer.MIN_VALUE)
 @Component
@@ -24,14 +21,14 @@ public class Shutdown {
 
     private static final Logger LOG = LoggerFactory.getLogger(Shutdown.class);
 
-    @Resource(name = "parallelExecutor")
-    private ExecutorService parallelExecutor;
+    @Resource
+    private ExecutorService executorService;
 
     @PreDestroy
     public void destroy() throws Exception {
-        LOG.info("Start closing the parallel-executors...");
-        ExecutorHelper.shutdownAwaitTermination(parallelExecutor, 3600);
-        LOG.info("Succeed closing the parallel-executors ok...");
+        LOG.info("Start closing the liteflow-when-calls...");
+        ExecutorHelper.shutdownAwaitTermination(executorService);
+        LOG.info("Succeed closing the liteflow-when-calls ok...");
     }
 
 }
diff --git a/liteflow-spring-boot-starter/src/main/resources/META-INF/liteflow-default.properties b/liteflow-spring-boot-starter/src/main/resources/META-INF/liteflow-default.properties
index ef7873807..f85c10dbc 100644
--- a/liteflow-spring-boot-starter/src/main/resources/META-INF/liteflow-default.properties
+++ b/liteflow-spring-boot-starter/src/main/resources/META-INF/liteflow-default.properties
@@ -1,7 +1,9 @@
 liteflow.rule-source=config/flow.xml
 liteflow.slot-size=1024
 liteflow.when-max-wait-second=15
+liteflow.when-max-workers=3
+liteflow.when-queue-limit=512
 liteflow.monitor.enable-log=false
 liteflow.monitor.queue-limit=200
 liteflow.monitor.delay=300000
-liteflow.monitor.period=300000
\ No newline at end of file
+liteflow.monitor.period=300000
diff --git a/liteflow-test-spring/src/main/resources/applicationContext.xml b/liteflow-test-spring/src/main/resources/applicationContext.xml
index 944baa722..57c18aa26 100644
--- a/liteflow-test-spring/src/main/resources/applicationContext.xml
+++ b/liteflow-test-spring/src/main/resources/applicationContext.xml
@@ -21,6 +21,8 @@
 		<property name="queueLimit" value="100"/>
 		<property name="period" value="5000"/>
 		<property name="delay" value="5000"/>
+		<property name="whenMaxWorkers" value="3"/>
+		<property name="whenQueueLimit" value="512"/>
 	</bean>
 
 	<bean id="flowExecutor" class="com.yomahub.liteflow.core.FlowExecutor">
@@ -31,5 +33,8 @@
 		<property name="liteflowConfig" ref="liteflowConfig"/>
 	</bean>
 
+	<bean class="java.util.concurrent.ExecutorService">
+		<property name="liteflowConfig" ref="liteflowConfig"/>
+	</bean>
 
 </beans>
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/ConcurrentCase.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/ConcurrentCase.java
index 9bd1fa315..e50b26fe9 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/ConcurrentCase.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/ConcurrentCase.java
@@ -9,14 +9,9 @@ import java.util.Objects;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.CopyOnWriteArrayList;
 
-
 /**
- * desc :
- * name : ConcurrentCase
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 流程的顺序执行、并发执行的CASE构造器
+ * @author justin.xu
  */
 public class ConcurrentCase {
     public static final Map<String, AbstractMap.SimpleEntry<List<Routers>, List<Routers>>> CASES = new ConcurrentHashMap<>();
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/SpringBootApp.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/SpringBootApp.java
index 2c113b5f0..9846e2fb5 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/SpringBootApp.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/SpringBootApp.java
@@ -5,12 +5,8 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
 
 /**
- * desc :
- * name : SpringBootApp
- *
- * @author : xujia
- * date : 2021/3/3
- * @since : 1.8
+ * 启动类
+ * @author justin.xu
  */
 @SpringBootApplication(exclude={DataSourceAutoConfiguration.class})
 public class SpringBootApp {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/TestParseFlow.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/TestParseFlow.java
index 1f7946153..00ba958a3 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/TestParseFlow.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/TestParseFlow.java
@@ -15,16 +15,13 @@ import org.springframework.test.context.junit4.SpringRunner;
 
 import java.util.AbstractMap;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 
 
 /**
- * desc :
- * name : TestParseFlow
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试流程的解析
+ * @author justin.xu
  */
 @ActiveProfiles("test")
 @RunWith(SpringRunner.class)
@@ -32,14 +29,14 @@ import java.util.List;
 public class TestParseFlow {
 
     private Check caseAsync = new Check("async", Arrays.asList(
-            new AbstractMap.SimpleEntry<>(ThenCondition.class, null),
-            new AbstractMap.SimpleEntry<>(WhenCondition.class, false),
-            new AbstractMap.SimpleEntry<>(WhenCondition.class, true),
-            new AbstractMap.SimpleEntry<>(WhenCondition.class, true)
+            ThenCondition.class,
+            WhenCondition.class,
+            WhenCondition.class,
+            WhenCondition.class
     ));
 
-    private Check caseConcurrent = new Check("async-concurrent1", Arrays.asList(
-            new AbstractMap.SimpleEntry<>(WhenCondition.class, true)
+    private Check caseConcurrent = new Check("async-concurrent1", Collections.singletonList(
+            WhenCondition.class
     ));
 
     @Test
@@ -55,31 +52,28 @@ public class TestParseFlow {
         Assert.assertTrue(null != chain.getConditionList() && !chain.getConditionList().isEmpty());
         for (int i = 0; i < chain.getConditionList().size(); i ++) {
 
-            AbstractMap.SimpleEntry<Class<?>, Boolean> expected = check.getAsyncWithWhen().get(i);
+            Class<? extends Condition> expected = check.getConditionClazz().get(i);
             Condition actual = chain.getConditionList().get(i);
 
-            Assert.assertEquals(expected.getKey(), actual.getClass());
-            if (actual.getClass().equals(WhenCondition.class)) {
-                Assert.assertEquals(expected.getValue(), ((WhenCondition) actual).isASync());
-            }
+            Assert.assertEquals(expected, actual.getClass());
         }
     }
 
     public static class Check {
         private String chainCode;
-        private List<AbstractMap.SimpleEntry<Class<?>, Boolean>> asyncWithWhen;
+        private List<Class<? extends Condition>> conditionClazz;
 
-        public Check(String chainCode, List<AbstractMap.SimpleEntry<Class<?>, Boolean>> asyncWithWhen) {
+        public Check(String chainCode, List<Class<? extends Condition>> conditionClazz) {
             this.chainCode = chainCode;
-            this.asyncWithWhen = asyncWithWhen;
+            this.conditionClazz = conditionClazz;
         }
 
         public String getChainCode() {
             return chainCode;
         }
 
-        public List<AbstractMap.SimpleEntry<Class<?>, Boolean>> getAsyncWithWhen() {
-            return asyncWithWhen;
+        public List<Class<? extends Condition>> getConditionClazz() {
+            return conditionClazz;
         }
     }
 }
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/TestRunFlow.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/TestRunFlow.java
index 7ec971022..bcb90b578 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/TestRunFlow.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/TestRunFlow.java
@@ -17,12 +17,8 @@ import static com.yomahub.flowtest.concurrent.ConcurrentCase.caseAssertRandom;
 import static com.yomahub.flowtest.concurrent.ConcurrentCase.caseInit;
 
 /**
- * desc :
- * name : TestRunFlow
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试流程的顺序执行、并发执行等
+ * @author justin.xu
  */
 @ActiveProfiles("test")
 @RunWith(SpringRunner.class)
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C10Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C10Component.java
index e92c245fc..360878450 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C10Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C10Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : C10
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("c10")
 public class C10Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C1Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C1Component.java
index 17d3d95f7..641a67629 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C1Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C1Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : c1
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("c1")
 public class C1Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C2Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C2Component.java
index 82564577d..7aa9ea9ab 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C2Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C2Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : C2
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("c2")
 public class C2Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C3Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C3Component.java
index 0be98bf76..104d2e1fd 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C3Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C3Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : C3Component
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("c3")
 public class C3Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C4Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C4Component.java
index d573fc658..207b20309 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C4Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C4Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : C4
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("c4")
 public class C4Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C5Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C5Component.java
index 29c0a7617..a5877c041 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C5Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C5Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : C5
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("c5")
 public class C5Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C6Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C6Component.java
index 108190689..af3bca011 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C6Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C6Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : C6
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("c6")
 public class C6Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C7Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C7Component.java
index 17d9e6336..30f47d0d1 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C7Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C7Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : c7
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("c7")
 public class C7Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C8Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C8Component.java
index eef38003a..ce9bb91e2 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C8Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C8Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : C8
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("c8")
 public class C8Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C9Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C9Component.java
index 7ee36f7d7..f770ac294 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C9Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/c/C9Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : C9
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("c9")
 public class C9Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P3Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P3Component.java
index eae5f65d1..eaaa96423 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P3Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P3Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : P3Component
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("p3")
 public class P3Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P4Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P4Component.java
index cf7bb188f..4b22bb1ad 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P4Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P4Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : P4Component
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("p4")
 public class P4Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P5Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P5Component.java
index 820944c86..c222c5876 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P5Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P5Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : P5
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("p5")
 public class P5Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P6Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P6Component.java
index be94347e3..a17f1ffcd 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P6Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P6Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : P6
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("p6")
 public class P6Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P7Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P7Component.java
index 0c9edd806..da1bfa819 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P7Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P7Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : P7Component
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("p7")
 public class P7Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P8Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P8Component.java
index 5bdf3a7cc..12f612e95 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P8Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/p/P8Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : P8Component
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("p8")
 public class P8Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S1Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S1Component.java
index 01a33d474..e78c15f35 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S1Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S1Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : S1Component
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("s1")
 public class S1Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S2Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S2Component.java
index 6a2aebd45..5d67adea1 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S2Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S2Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : S2Component
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("s2")
 public class S2Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S3Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S3Component.java
index df52250ae..d85ca5822 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S3Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S3Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : S3
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("s3")
 public class S3Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S4Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S4Component.java
index a0cb7306a..47bec234d 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S4Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S4Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : S4
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("s4")
 public class S4Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S5Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S5Component.java
index 4e491d33b..4c20855dc 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S5Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S5Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : S5
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("s5")
 public class S5Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S6Component.java b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S6Component.java
index d7cd20947..ee2578b6c 100644
--- a/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S6Component.java
+++ b/liteflow-test-springboot/src/test/java/com/yomahub/flowtest/concurrent/mock/component/s/S6Component.java
@@ -5,12 +5,8 @@ import com.yomahub.liteflow.core.NodeComponent;
 import org.springframework.stereotype.Component;
 
 /**
- * desc :
- * name : S6
- *
- * @author : xujia
- * date : 2021/3/25
- * @since : 1.8
+ * 测试mock component
+ * @author justin.xu
  */
 @Component("s6")
 public class S6Component extends NodeComponent {
diff --git a/liteflow-test-springboot/src/test/resources/config/flow-test.xml b/liteflow-test-springboot/src/test/resources/config/flow-test.xml
index 13245b27d..a2e66e396 100644
--- a/liteflow-test-springboot/src/test/resources/config/flow-test.xml
+++ b/liteflow-test-springboot/src/test/resources/config/flow-test.xml
@@ -4,17 +4,17 @@
     <!-- 测试when节点中async是值各种设置后是否按照正确逻辑调用 -->
     <chain name="async">
         <then value="s1, s2"/> <!-- then表示串行 -->
-        <when async = "false" value="s3, s4, s5, s6"/> <!-- async = false 表示串行 -->
-        <when async = "true" value="p3, p4, p5, p6"/> <!-- async = true 表示并行 -->
+        <when value="s3, s4, s5, s6"/> <!-- async = false 表示串行 -->
+        <when value="p3, p4, p5, p6"/> <!-- async = true 表示并行 -->
         <when value = "p7, p8"/> <!-- async未设置表示并行 -->
     </chain>
 
     <!-- 模拟线程池中可用线程只有2个线程时，当并发的when都大于2时，线程来回处理切换中threadLocal中的slotIndex是否正确 -->
     <chain name="async-concurrent1">
-        <when async = "true" value="c1, c2, c3, c4, c5"/> <!-- async = true 表示并行 -->
+        <when value="c1, c2, c3, c4, c5"/> <!-- async = true 表示并行 -->
     </chain>
 
     <chain name="async-concurrent2">
-        <when async = "true" value="c6, c7, c8, c9, c10"/> <!-- async = true 表示并行 -->
+        <when value="c6, c7, c8, c9, c10"/> <!-- async = true 表示并行 -->
     </chain>
 </flow>