diff --git a/renren-admin/src/main/resources/db/V7.9__sys_user_add_index.sql b/renren-admin/src/main/resources/db/V7.9__sys_user_add_index.sql
new file mode 100644
index 00000000..d57174a5
--- /dev/null
+++ b/renren-admin/src/main/resources/db/V7.9__sys_user_add_index.sql
@@ -0,0 +1,2 @@
+ALTER TABLE `sys_user`
+	ADD INDEX `idx_dept_id`(`dept_id`);
\ No newline at end of file