diff --git a/backend/ai_services/views.py b/backend/ai_services/views.py
index cdadb9e..aea9c6f 100644
--- a/backend/ai_services/views.py
+++ b/backend/ai_services/views.py
@@ -115,7 +115,11 @@ class TranscriptionTaskViewSet(viewsets.ModelViewSet):
             }
             if project_id:
                 try:
-                    task_data['project_id'] = int(project_id)
+                    p_id = int(project_id)
+                    # 只有当 ID > 0 时才认为是有效的项目 ID
+                    # 避免前端传递 0 或 Swagger 默认值导致的外键约束错误
+                    if p_id > 0:
+                        task_data['project_id'] = p_id
                 except (ValueError, TypeError):
                     pass # Ignore invalid project_id