diff --git a/backend/src/main/java/com/designhub/service/TaskItemService.java b/backend/src/main/java/com/designhub/service/TaskItemService.java
index d3470d2..4fed395 100644
--- a/backend/src/main/java/com/designhub/service/TaskItemService.java
+++ b/backend/src/main/java/com/designhub/service/TaskItemService.java
@@ -1086,7 +1086,8 @@ public class TaskItemService {
                     groupInfo.put("previewImage", mainTask.getPreviewImage());
                     groupInfo.put("attachmentUrl", mainTask.getAttachmentUrl());
                     groupInfo.put("remark", mainTask.getRemark());
-                    groupInfo.put("typeDetails", mainTask.getTypeDetails());
+                    // 使用子任务自己的typeDetails（子任务创建时已经保存了明细）
+                    groupInfo.put("typeDetails", item.getTypeDetails());
                     
                     // 发起人信息
                     groupInfo.put("publisherId", mainTask.getPublisherId());