diff --git a/vnpy_bridge.py b/vnpy_bridge.py
index dde7012..4d0ca8d 100644
--- a/vnpy_bridge.py
+++ b/vnpy_bridge.py
@@ -1099,6 +1099,17 @@ class CtpBridge:
         """不再 monkey-patch CTP 成交回调（易与并发查询冲突导致 vnctptd 段错误）。"""
         return
 
+    @staticmethod
+    def _engine_collection_items(raw: Any) -> list[Any]:
+        """vnpy 不同版本可能返回 dict 或 list。"""
+        if raw is None:
+            return []
+        if isinstance(raw, dict):
+            return list(raw.values())
+        if isinstance(raw, (list, tuple)):
+            return list(raw)
+        return [raw]
+
     def _collect_engine_trades(self) -> list[dict[str, Any]]:
         if not self._engine:
             return []
@@ -1107,8 +1118,8 @@ class CtpBridge:
         try:
             trades = self._engine.get_all_trades()
         except Exception:
-            trades = {}
-        for trade in (trades or {}).values():
+            trades = None
+        for trade in self._engine_collection_items(trades):
             row = self._trade_row_from_vnpy(trade)
             if not row:
                 continue