diff --git a/backend/src/main/java/com/designhub/service/TaskService.java b/backend/src/main/java/com/designhub/service/TaskService.java
index 74f260a..28d113d 100644
--- a/backend/src/main/java/com/designhub/service/TaskService.java
+++ b/backend/src/main/java/com/designhub/service/TaskService.java
@@ -254,6 +254,11 @@ public class TaskService {
             task.setIsDelayed(0);
         }
         
+        // 设置创建时间（如果未设置）
+        if (task.getCreateTime() == null) {
+            task.setCreateTime(LocalDateTime.now());
+        }
+        
         // 【两级审核流程】初始化审核状态
         initApprovalStatus(task);