diff --git a/main.py b/main.py
index a377ded..8f52744 100644
--- a/main.py
+++ b/main.py
@@ -320,6 +320,7 @@ class MexcSpotTrade:
                 price = float(processed_kwargs["price"])
                 quantity = quote_amount / price
                 processed_kwargs["quantity"] = str(quantity)
+                processed_kwargs.pop("quoteOrderQty")
                 logger.info("根据quoteOrderQty计算quantity: %f", quantity)
             except (ValueError, KeyError) as e:
                 logger.error("计算quantity失败: %s", str(e))