diff --git a/app/Models/ProjectTask.php b/app/Models/ProjectTask.php
index c985629f6..bd22dd6e3 100644
--- a/app/Models/ProjectTask.php
+++ b/app/Models/ProjectTask.php
@@ -1144,9 +1144,6 @@ class ProjectTask extends AbstractModel
      */
     public function copyTask()
     {
-        if ($this->parent_id > 0) {
-            throw new ApiException('子任务禁止复制');
-        }
         return AbstractModel::transaction(function() {
             // 复制任务
             $task = $this->replicate();
diff --git a/app/Tasks/LoopTask.php b/app/Tasks/LoopTask.php
index 301596e45..31071e023 100644
--- a/app/Tasks/LoopTask.php
+++ b/app/Tasks/LoopTask.php
@@ -60,6 +60,18 @@ class LoopTask extends AbstractTask
                         $task->start_at = Carbon::parse($task->loop_at);
                         $task->end_at = $task->start_at->clone()->addSeconds($diffSecond);
                     }
+                    // 处理子任务
+                    $subTasks = ProjectTask::whereParentId($item->id)->get();
+                    if (!$subTasks->isEmpty()) {
+                        foreach ($subTasks as $subTask) {
+                            $newSubTask = $subTask->copyTask();
+                            $newSubTask->parent_id = $task->id;
+                            $newSubTask->start_at = $task->start_at;
+                            $newSubTask->end_at = $task->end_at;
+                            $newSubTask->save();
+                        }
+                    }
+                    // 
                     $task->refreshLoop(true);
                     $task->addLog("创建任务来自周期任务ID：{$item->id}", [], $task->userid);
                     // 清空旧周期
diff --git a/language/original-web.txt b/language/original-web.txt
index 22d070a05..e0b608280 100644
--- a/language/original-web.txt
+++ b/language/original-web.txt
@@ -2072,3 +2072,5 @@ AI开启新会话失败
 应用商店
 打开OKR
 OKR群组
+
+重复周期生成的子任务时间将会被清除，是否确认继续？
\ No newline at end of file
diff --git a/resources/assets/js/pages/manage/components/TaskDetail.vue b/resources/assets/js/pages/manage/components/TaskDetail.vue
index d524f1c85..ec5df1f16 100755
--- a/resources/assets/js/pages/manage/components/TaskDetail.vue
+++ b/resources/assets/js/pages/manage/components/TaskDetail.vue
@@ -1537,7 +1537,17 @@ export default {
                 list,
                 size: 'large',
                 onUpdate: (value) => {
-                    this.updateData('loop', value)
+                    if (this.subList.length > 0) {
+                        $A.modalConfirm({
+                            language: false,
+                            content: this.$L('重复周期生成的子任务时间将会被清除，是否确认继续？'),
+                            onOk: () => {
+                                this.updateData('loop', value)
+                            }
+                        });
+                    } else {
+                        this.updateData('loop', value)
+                    }
                 }
             })
         },