diff --git a/src/main/java/com/ruoyi/task/service/impl/TaskPlanServiceImpl.java b/src/main/java/com/ruoyi/task/service/impl/TaskPlanServiceImpl.java
index b151bc7..8764399 100644
--- a/src/main/java/com/ruoyi/task/service/impl/TaskPlanServiceImpl.java
+++ b/src/main/java/com/ruoyi/task/service/impl/TaskPlanServiceImpl.java
@@ -226,6 +226,20 @@ public class TaskPlanServiceImpl implements ITaskPlanService {
     public boolean updateTaskPlan(TaskPlanDTO taskPlanDTO) {
         TaskPlan taskPlan = TaskPlanDTOConvert.toDomain(taskPlanDTO);
         TaskPlan result = taskPlanDomain.updateTaskPlan(taskPlan);
+        
+        if (result != null) {
+            // 先删除该计划下的所有未执行任务
+            List<Task> tasks = taskDomain.getTaskByPlanId(result.getId());
+            for (Task task : tasks) {
+                if (task.getStatus() == StatusEnum.PENDING) {
+                    taskDomain.deleteTask(task.getId());
+                }
+            }
+            
+            // 重新创建任务
+            createTaskFromPlan(result);
+        }
+        
         return result != null;
     }