diff --git a/plugins/sphinx/index.py b/plugins/sphinx/index.py
index 702956609..5e614b3e7 100755
--- a/plugins/sphinx/index.py
+++ b/plugins/sphinx/index.py
@@ -356,6 +356,9 @@ def makeDbToSphinx():
     is_delta = args['is_delta']
     is_cover = args['is_cover']
 
+    if is_cover != 'yes':
+        return mw.returnJson(False,'暂时仅支持覆盖!')
+
     sph_file = getConf()
 
     import  sphinx_make