diff --git a/__pycache__/mcp_server.cpython-310.pyc b/__pycache__/mcp_server.cpython-310.pyc
index dd509476..d8e93f25 100644
Binary files a/__pycache__/mcp_server.cpython-310.pyc and b/__pycache__/mcp_server.cpython-310.pyc differ
diff --git a/mcp_server.py b/mcp_server.py
index a4b40a12..890251be 100644
--- a/mcp_server.py
+++ b/mcp_server.py
@@ -314,33 +314,17 @@ TOOLS: List[ToolDefinition] = [
     ),
     ToolDefinition(
         name="search_concepts",
-        description="搜索股票概念板块，支持按涨跌幅、股票数量排序。返回概念详情及相关股票列表。",
+        description="搜索股票概念板块，返回概念详情及相关股票列表。",
         parameters={
             "type": "object",
             "properties": {
                 "query": {
                     "type": "string",
-                    "description": "搜索关键词，例如：'新能源'、'人工智能'"
-                },
-                "size": {
-                    "type": "integer",
-                    "description": "每页结果数量",
-                    "default": 10
-                },
-                "page": {
-                    "type": "integer",
-                    "description": "页码",
-                    "default": 1
-                },
-                "sort_by": {
-                    "type": "string",
-                    "description": "排序方式：change_pct(涨跌幅), _score(相关度), stock_count(股票数), concept_name(名称)",
-                    "enum": ["change_pct", "_score", "stock_count", "concept_name"],
-                    "default": "change_pct"
+                    "description": "搜索关键词，例如：'新能源'、'人工智能'、'商业航天'"
                 },
                 "trade_date": {
                     "type": "string",
-                    "description": "交易日期，格式：YYYY-MM-DD，默认最新"
+                    "description": "交易日期，格式：YYYY-MM-DD，不传则使用今天"
                 }
             },
             "required": ["query"]
@@ -1469,18 +1453,27 @@ async def handle_search_roadshows(args: Dict[str, Any]) -> Any:
     return response.json()
 
 async def handle_search_concepts(args: Dict[str, Any]) -> Any:
-    """处理概念搜索"""
+    """处理概念搜索
+
+    参数写死：size=12, page=1, sort_by="_score"
+    trade_date 如果没传则使用今天的日期
+    """
+    from datetime import date
+
+    # trade_date 默认今天
+    trade_date = args.get("trade_date") or date.today().strftime("%Y-%m-%d")
+
     payload = {
         "query": args["query"],
-        "size": args.get("size", 10),
-        "page": args.get("page", 1),
+        "size": 12,  # 写死
+        "page": 1,   # 写死
+        "sort_by": "_score",  # 写死，按相关度排序
+        "trade_date": trade_date,
         "search_size": 100,
-        "sort_by": args.get("sort_by", "change_pct"),
         "use_knn": True
     }
-    if args.get("trade_date"):
-        payload["trade_date"] = args["trade_date"]
 
+    logger.info(f"[search_concepts] 请求参数: {payload}")
     response = await HTTP_CLIENT.post(f"{ServiceEndpoints.CONCEPT_API}/search", json=payload)
     response.raise_for_status()
     return response.json()