diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/AndOperator.java b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/AndOperator.java
index 0e5f731ab..29d663cbe 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/AndOperator.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/AndOperator.java
@@ -16,7 +16,7 @@ import com.yomahub.liteflow.flow.element.condition.BooleanConditionTypeEnum;
 public class AndOperator extends BaseOperator<AndOrCondition> {
     @Override
     public AndOrCondition build(Object[] objects) throws Exception {
-        OperatorHelper.checkObjectSizeGtTwo(objects);
+        OperatorHelper.checkObjectSizeGteTwo(objects);
 
         AndOrCondition andOrCondition = new AndOrCondition();
         andOrCondition.setBooleanConditionType(BooleanConditionTypeEnum.AND);
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/MustOperator.java b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/MustOperator.java
index b3e3f0c28..8a903008c 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/MustOperator.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/MustOperator.java
@@ -19,7 +19,7 @@ public class MustOperator extends BaseOperator<WhenCondition> {
 
 	@Override
 	public WhenCondition build(Object[] objects) throws Exception {
-		OperatorHelper.checkObjectSizeGtTwo(objects);
+		OperatorHelper.checkObjectSizeGteTwo(objects);
 
 		String errorMsg = "The caller must be WhenCondition item";
 		WhenCondition whenCondition = OperatorHelper.convert(objects[0], WhenCondition.class, errorMsg);
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/OrOperator.java b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/OrOperator.java
index d084a7536..361ab62bb 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/OrOperator.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/OrOperator.java
@@ -16,7 +16,7 @@ import com.yomahub.liteflow.flow.element.condition.BooleanConditionTypeEnum;
 public class OrOperator extends BaseOperator<AndOrCondition> {
     @Override
     public AndOrCondition build(Object[] objects) throws Exception {
-        OperatorHelper.checkObjectSizeGtTwo(objects);
+        OperatorHelper.checkObjectSizeGteTwo(objects);
 
         AndOrCondition andOrCondition = new AndOrCondition();
         andOrCondition.setBooleanConditionType(BooleanConditionTypeEnum.OR);
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/ToOperator.java b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/ToOperator.java
index d38722a03..4eede8779 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/ToOperator.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/ToOperator.java
@@ -15,7 +15,7 @@ public class ToOperator extends BaseOperator<SwitchCondition> {
 
 	@Override
 	public SwitchCondition build(Object[] objects) throws Exception {
-		OperatorHelper.checkObjectSizeGtTwo(objects);
+		OperatorHelper.checkObjectSizeGteTwo(objects);
 
 		String errorMsg = "The caller must be SwitchCondition item";
 		SwitchCondition switchCondition = OperatorHelper.convert(objects[0], SwitchCondition.class, errorMsg);
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/base/OperatorHelper.java b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/base/OperatorHelper.java
index c54681a63..07a163412 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/base/OperatorHelper.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/operator/base/OperatorHelper.java
@@ -10,8 +10,6 @@ import com.yomahub.liteflow.exception.DataNotFoundException;
 import com.yomahub.liteflow.flow.element.Condition;
 import com.yomahub.liteflow.flow.element.Executable;
 import com.yomahub.liteflow.flow.element.Node;
-import com.yomahub.liteflow.flow.element.condition.AndOrCondition;
-import com.yomahub.liteflow.flow.element.condition.NotCondition;
 
 import java.util.Objects;
 
@@ -35,13 +33,13 @@ public class OperatorHelper {
 	}
 
 	/**
-	 * 检查参数数量，大于 2
+	 * 检查参数数量，大于等于 2
 	 * @param objects objects
 	 * @throws QLException QLException
 	 */
-	public static void checkObjectSizeGtTwo(Object[] objects) throws QLException {
+	public static void checkObjectSizeGteTwo(Object[] objects) throws QLException {
 		checkObjectSizeGtZero(objects);
-		if (objects.length <= 1) {
+		if (objects.length < 2) {
 			throw new QLException("parameter error");
 		}
 	}