diff --git a/freqtrade/exchange/exchange.py b/freqtrade/exchange/exchange.py
index ac19696f..582654e8 100644
--- a/freqtrade/exchange/exchange.py
+++ b/freqtrade/exchange/exchange.py
@@ -2904,7 +2904,12 @@ class Exchange:
     def _now_is_time_to_refresh(self, pair: str, timeframe: str, candle_type: CandleType) -> bool:
         # Timeframe in seconds
         interval_in_sec = timeframe_to_msecs(timeframe)
-        plr = self._pairs_last_refresh_time.get((pair, timeframe, candle_type), 0) + interval_in_sec
+        # 当 ohlcv_partial_candle=False 时，不需要再加 interval_in_sec
+        # 因为此时 _pairs_last_refresh_time 已经是最后一根完整蜡烛的时间
+        if self._ohlcv_partial_candle:
+            plr = self._pairs_last_refresh_time.get((pair, timeframe, candle_type), 0) + interval_in_sec
+        else:
+            plr = self._pairs_last_refresh_time.get((pair, timeframe, candle_type), 0)
         # current,active candle open date
         now = dt_ts(timeframe_to_prev_date(timeframe))
         return plr < now