diff --git a/renren-admin/src/main/resources/db/V3.6__sys_user_token_drop_index.sql b/renren-admin/src/main/resources/db/V3.6__sys_user_token_drop_index.sql
new file mode 100644
index 00000000..91682ede
--- /dev/null
+++ b/renren-admin/src/main/resources/db/V3.6__sys_user_token_drop_index.sql
@@ -0,0 +1,23 @@
+DROP PROCEDURE IF EXISTS del_idx;
+
+create procedure del_idx(IN p_tablename varchar(200), IN p_idxname VARCHAR(200))
+
+begin
+
+DECLARE str VARCHAR(250);
+
+set @str=concat(' drop index ',p_idxname,' on ',p_tablename);
+
+select count(*) into @cnt from information_schema.statistics where table_name=p_tablename and index_name=p_idxname ;
+
+if @cnt >0 then
+
+PREPARE stmt FROM @str;
+
+EXECUTE stmt ;
+
+end if;
+
+end ;
+
+call del_idx('sys_user_token','user_id');
\ No newline at end of file