diff --git a/flask_test.py b/flask_test.py
index 4d0ee15..39aa522 100644
--- a/flask_test.py
+++ b/flask_test.py
@@ -6,7 +6,12 @@ app = Flask(__name__)
 
 endpoint = "https://api.dailymotion.com/videos"
 DEFAULT_PAGE = 1
-FIXED_LIMIT = 100         # ← 现在固定 100
+FIXED_LIMIT = 100
+VALID_SORTS = {
+    'recent', 'relevance', 'alpha', 'alphaaz',
+    'alphaza', 'most', 'least', 'changed'
+}
+
 db = DBVidcon()
 
 @app.route("/get", methods=["GET"])
@@ -15,9 +20,18 @@ def get_videos():
     if not keyword:
         return jsonify({"status": "error", "msg": "keyword 参数不能为空"}), 400
 
+    # 页码和国家参数
     i = request.args.get("page", DEFAULT_PAGE, type=int)
-    rn = request.args.get("rn", "US")
-    rn = rn.upper()
+    rn = request.args.get("rn", "US").upper()
+
+    # 排序参数，必须合法
+    sort = request.args.get("sort", "relevance").strip().lower()
+    if sort not in VALID_SORTS:
+        return jsonify({
+            "status": "error",
+            "msg": f"sort 参数非法，可选值: {sorted(VALID_SORTS)}"
+        }), 400
+
     proxy_string = db.get_proxy(rn)
     proxies = {"http": proxy_string, "https": proxy_string} if proxy_string else None
 
@@ -25,9 +39,9 @@ def get_videos():
         "search": keyword,
         "fields": "id,title,created_time,thumbnail_240_url,duration,"
                   "owner.id,owner.screenname,likes_total,views_total",
-        "limit": FIXED_LIMIT,     # ← 强制 100
+        "limit": FIXED_LIMIT,
         "page": i,
-        "sort": "relevance"
+        "sort": sort
     }
 
     try: