diff --git a/vnpy_tushare/tushare_datafeed.py b/vnpy_tushare/tushare_datafeed.py
index 1e413ba..21e029c 100644
--- a/vnpy_tushare/tushare_datafeed.py
+++ b/vnpy_tushare/tushare_datafeed.py
@@ -143,7 +143,12 @@ def query_bar_history(self, req: HistoryRequest) -> Optional[List[BarData]]:
         end = req.end.strftime("%Y%m%d")
 
         ts_symbol = to_ts_symbol(symbol, exchange)
+        if not ts_symbol:
+            return None
+
         asset = to_ts_asset(symbol, exchange)
+        if not asset:
+            return None
 
         ts_interval = INTERVAL_VT2TS.get(interval)
         if not ts_interval: