diff --git a/YLErpDAL/Modules/SwapModule/SwapDealService.cs b/YLErpDAL/Modules/SwapModule/SwapDealService.cs
index ffcc5ee7..5f87491a 100644
--- a/YLErpDAL/Modules/SwapModule/SwapDealService.cs
+++ b/YLErpDAL/Modules/SwapModule/SwapDealService.cs
@@ -12,6 +12,7 @@ using YLErp.Modules.EodModule;
 using YLErp.Modules.TradeModule;
 using YLErp.Modules.TradeModule.DealModule;
 using YLErp.Modules.SwapModule.InterestLegs;
+using YLErp.Modules.SwapModule.Margin;
 using YLErp.QdpModule;
 
 namespace YLErp.Modules.SwapModule
@@ -848,9 +849,9 @@ namespace YLErp.Modules.SwapModule
                 {
                     closePrincipal = closePosiNotionalValue;
                 }
-                if ((InterestModeEnum)position.InterestMode == InterestModeEnum.追加预付金 || (InterestModeEnum)position.InterestMode == InterestModeEnum.初始预付金)
+                if (MarginModes.Contains(position.InterestMode))
                 {
-                    positionClone.InterestDirection = position.InterestDirection == (int)SwapDirectionEnum.收取 ? (int)SwapDirectionEnum.支付 : (int)SwapDirectionEnum.收取;
+                    positionClone.InterestDirection = FlipMarginDirection(position.InterestDirection);
                 }
 
                 // 获取利率
@@ -1169,6 +1170,15 @@ namespace YLErp.Modules.SwapModule
                 : fallback;
         }
 
+        /// <summary>
+        /// 保证金腿的利息方向翻转。保证金利息是券商付给客户(方向与融资腿相反)。
+        /// 待迁入 Margin 模块。
+        /// </summary>
+        private static int FlipMarginDirection(int direction)
+            => direction == (int)SwapDirectionEnum.收取
+                ? (int)SwapDirectionEnum.支付
+                : (int)SwapDirectionEnum.收取;
+
         /// <summary>
         /// 初始化利息腿信息
         /// </summary>
@@ -1918,10 +1928,10 @@ namespace YLErp.Modules.SwapModule
                     _closePosiNotionalValue = _posiNotionalValue * grossPrice * newClosePercent;
                     _posiNotionalValue = _posiNotionalValue * grossPrice;
                 }
-                else if (item.InterestMode == (int)InterestModeEnum.追加预付金 || item.InterestMode == (int)InterestModeEnum.初始预付金)
+                else if (MarginModes.Contains(item.InterestMode))
                 {
                     _closePosiNotionalValue = 0;
-                    positionClone.InterestDirection = position.InterestDirection == (int)SwapDirectionEnum.收取 ? (int)SwapDirectionEnum.支付 : (int)SwapDirectionEnum.收取;
+                    positionClone.InterestDirection = FlipMarginDirection(position.InterestDirection);
                 }
                 decimal rate = item.InterestRateDefault;
                 if (swapIntervalToday != null)//当日无适用观察日