diff --git a/Plugins/YLErp.Plugins.ZheShang/DocumentGenerator/TradeConfirmationGenerator.cs b/Plugins/YLErp.Plugins.ZheShang/DocumentGenerator/TradeConfirmationGenerator.cs
index d8978354..a41e4c64 100644
--- a/Plugins/YLErp.Plugins.ZheShang/DocumentGenerator/TradeConfirmationGenerator.cs
+++ b/Plugins/YLErp.Plugins.ZheShang/DocumentGenerator/TradeConfirmationGenerator.cs
@@ -177,7 +177,7 @@ namespace YLErp.Plugins.ShanXi.DocumentGenerator
                         dic["利差%"] = ((interestMargin?.InterestRateDefault) ?? 0) * 100;
                         dic["参考利率"] = interestMargin?.FloatRateUnderlyingCode;
                         dic["固定利率"] = "";
-                        dic["计算基准"] = interestMargin?.FloatRateUnderlyingCode +" " + ((interestMargin?.InterestRateDefault) ?? 0) * 100 + "%";
+                        dic["计算基准"] = interestMargin?.FloatRateUnderlyingCode + (interestMargin?.InterestRateDefault >= 0 ? " + " : "") + ((interestMargin?.InterestRateDefault) ?? 0) * 100 + "%";
                         dic["重置频率"] = interestMargin?.interest_rest_days + "天";
                     }
                     dic["初始预付金支付日"] = trade.TradeDate?.ToString("yyyy年M月d日");