diff --git a/plugin/think-library/src/extend/PhinxExtend.php b/plugin/think-library/src/extend/PhinxExtend.php
index a4bb9bdf3..d11a6dce6 100644
--- a/plugin/think-library/src/extend/PhinxExtend.php
+++ b/plugin/think-library/src/extend/PhinxExtend.php
@@ -144,7 +144,7 @@ class PhinxExtend
                 return $part[0] ?? '';
             }, explode('_', $str)));
         };
-        return sprintf('idx_%s_%s_%s', substr(md5($table), -4), $getInitials($table), $getInitials($name));
+        return sprintf('idx_%s_%s_%s', substr(md5($table), -4), $getInitials($table), $name);
     }