diff --git a/README.md b/README.md
index 1a0b4d4..1a29928 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ And **go-api-gateway** provide the **swagger.json** at path **/gateway/swagger/*
 
 Because of initialization data into **casbin_rule** table
 ```bash
-p  admin  /policy/*	  (GET)|(POST)|(PUT)|(DELETE)
+p  admin  /policy/*	  (GET)|(POST)|(PUT)|(DELETE)|(HEAD)
 ```
 So register **admin** first to authorize the operation at **/gateway/docs/**
 
diff --git a/enforcer/casbin.go b/enforcer/casbin.go
index 077ad31..7d2f663 100644
--- a/enforcer/casbin.go
+++ b/enforcer/casbin.go
@@ -58,8 +58,8 @@ func insertData(dataSourceName string) (err error) {
 			return err
 		}
 		defer engine.Close()
-		engine.Exec("DELETE FROM `"+dbName+"`.`casbin_rule` WHERE `p_type`='p' AND `v0`='admin' AND `v1`='/policy/*' AND `v2`='(GET)|(POST)|(PUT)|(DELETE)' AND `v3`IS NULL AND `v4`IS NULL AND `v5`IS NULL")
-		_, err = engine.Exec("INSERT  INTO `"+dbName+"`.`casbin_rule`(`p_type`,`v0`,`v1`,`v2`) VALUES ('p','admin','/policy/*','(GET)|(POST)|(PUT)|(DELETE)')")
+		engine.Exec("DELETE FROM `"+dbName+"`.`casbin_rule` WHERE `p_type`='p' AND `v0`='admin' AND `v1`='/policy/*' AND `v2`='(GET)|(POST)|(PUT)|(DELETE)|(HEAD)' AND `v3`IS NULL AND `v4`IS NULL AND `v5`IS NULL")
+		_, err = engine.Exec("INSERT  INTO `"+dbName+"`.`casbin_rule`(`p_type`,`v0`,`v1`,`v2`) VALUES ('p','admin','/policy/*','(GET)|(POST)|(PUT)|(DELETE)|(HEAD)')")
 	}else {
 		err=fmt.Errorf("dataSourceName:%s doesn't exist dbName",dataSourceName)
 	}