diff --git a/src/xt_trader.py b/src/xt_trader.py
index 06cf7d6..86ef326 100644
--- a/src/xt_trader.py
+++ b/src/xt_trader.py
@@ -144,9 +144,9 @@ class XtTrader:
                     "stock_code": o.stock_code,
                     "order_id": o.order_id,
                     "order_time": o.order_time,
-                    "order_type": o.order_type,
+                    "order_type": "buy" if o.order_type == xtconstant.STOCK_BUY else "sell",
                     "order_volume": o.order_volume,
-                    "price_type": o.price_type,
+                    "price_type": self._convert_price_type(o.price_type),
                     "price": o.price,
                     "traded_volume": o.traded_volume,
                     "traded_price": o.traded_price,
@@ -155,7 +155,20 @@ class XtTrader:
                 } for o in orders
             ]
         return []
-    
+
+    def _convert_price_type(self, price_type):
+        """Convert numeric price type to readable string"""
+        price_type_map = {
+            xtconstant.LATEST_PRICE: "latest_price",           # 最新价
+            xtconstant.FIX_PRICE: "limit_price",              # 指定价/限价
+            xtconstant.MARKET_BEST: "market_best",            # 市价最优价
+            xtconstant.MARKET_CANCEL: "market_cancel",        # 市价即成剩撤
+            xtconstant.MARKET_CANCEL_ALL: "market_cancel_all",  # 市价全额成交或撤销
+            xtconstant.MARKET_PEER_PRICE_FIRST: "market_peer_best",  # 对手方最优价格
+            xtconstant.MARKET_MINE_PRICE_FIRST: "market_mine_best",  # 本方最优价格
+        }
+        return price_type_map.get(price_type, f"unknown_{price_type}")
+
     def buy(self, code, price, amount):
         order_id = self.xt_trader.order_stock(
             self.account, code, xtconstant.STOCK_BUY, amount, xtconstant.FIX_PRICE, price, self._strategy_name, self._remark