diff --git a/OpenAuth.App/Flow/FlowRuntime.cs b/OpenAuth.App/Flow/FlowRuntime.cs
index 36f19fc4..6ebf7a0e 100644
--- a/OpenAuth.App/Flow/FlowRuntime.cs
+++ b/OpenAuth.App/Flow/FlowRuntime.cs
@@ -267,6 +267,8 @@ namespace OpenAuth.App.Flow
                                 isFirst = false;
                                 break;
                             }
+
+                            preNode = GetPreNode(preNode.id);
                         }
 
                         if (isFirst)
diff --git a/Vue2/src/components/CreatedFlow/index.vue b/Vue2/src/components/CreatedFlow/index.vue
index 05638271..e642caaf 100644
--- a/Vue2/src/components/CreatedFlow/index.vue
+++ b/Vue2/src/components/CreatedFlow/index.vue
@@ -1,7 +1,7 @@
 <!--
  * @Author: yubaolee <yubaolee@163.com> | ahfu~ <954478625@qq.com>
  * @Date: 2024-01-08 17:08:56
- * @LastEditTime: 2024-06-21 10:16:05
+ * @LastEditTime: 2026-06-14 22:50:56
  * @Description: 
  * @
  * @Copyright (c) 2024 by yubaolee | ahfu~ , All Rights Reserved. 
@@ -304,9 +304,20 @@ export default {
           const to = info.targetId
 
           if (from === to) return false
-          const filter = that.flowData.lines.filter(link => (link.from === from && link.to === to))
+          const filter = that.flowData.lines.filter(link => (link.from === from && link.to === to) 
+          || (link.from === to && link.to === from))
           if (filter.length > 0) {
-            that.$message.error('同方向的两节点连线只能有一条！')
+            that.$message.error('两节点连线只能有一条！')
+            return false
+          }
+
+          if(from.includes("end")){
+            that.$message.error('结束节点不能作为起点！')
+            return false
+          }
+
+          if(to.includes("start")){
+            that.$message.error('开始节点不能作为终点！')
             return false
           }
           return true