diff --git a/bin/update_port.sh b/bin/update_port.sh
index 6663964..2d1f6ea 100644
--- a/bin/update_port.sh
+++ b/bin/update_port.sh
@@ -88,10 +88,10 @@ update_port(){
 }
 
 ask_update_port(){
-    local script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" # 脚本文件夹路径
+    local script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
     local config_file="$script_dir/../conf/config.json"
 
-    local current_port=$(jq -r '.inbounds[0].port' $config_dir/config.json)
-    local new_port=ask_update "请输入新的端口号" "$current_port"
-    update_port $new_port
-}
+    local current_port=$(jq -r '.inbounds[0].port' "$config_file")
+    local new_port=$(ask_update "请输入新的端口号" "$current_port")
+    update_port "$new_port"
+}
\ No newline at end of file