diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/LiteFlowChainELBuilder.java b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/LiteFlowChainELBuilder.java
index 04ebcc221..c52e3b0b1 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/LiteFlowChainELBuilder.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/LiteFlowChainELBuilder.java
@@ -53,7 +53,7 @@ public class LiteFlowChainELBuilder {
     /**
      * EL解析引擎
      */
-    private final static ExpressRunner EXPRESS_RUNNER = new ExpressRunner();
+    public final static ExpressRunner EXPRESS_RUNNER = new ExpressRunner();
 
     static {
         //初始化QLExpress的Runner
@@ -135,6 +135,9 @@ public class LiteFlowChainELBuilder {
             //往上下文里放入所有的node，使得el表达式可以直接引用到nodeId
             FlowBus.getNodeMap().keySet().forEach(nodeId -> context.put(nodeId, FlowBus.getNode(nodeId)));
 
+            //放入当前主chain的ID
+            context.put(ChainConstant.CURR_CHAIN_ID, this.chain.getChainId());
+
             //解析el成为一个Condition
             //为什么这里只是一个Condition，而不是一个List<Condition>呢
             //这里无论多复杂的，外面必定有一个最外层的Condition，所以这里只有一个，内部可以嵌套很多层，这点和以前的不太一样
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/common/ChainConstant.java b/liteflow-core/src/main/java/com/yomahub/liteflow/common/ChainConstant.java
index 5096d9e69..6510e9abd 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/common/ChainConstant.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/common/ChainConstant.java
@@ -64,4 +64,6 @@ public interface ChainConstant {
     String DATA = "data";
 
     String MONITOR_BUS = "monitorBus";
+
+    String CURR_CHAIN_ID = "currChainId";
 }