diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs
index 349925004..1eda0e590 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs
@@ -213,18 +213,18 @@ namespace SqlSugar
             var bEntity = navObjectNameColumnInfo.PropertyInfo.PropertyType.GetGenericArguments()[0];
             var bEntityInfo = this.Context.EntityMaintenance.GetEntityInfo(bEntity);
             var bPkColumn = bEntityInfo.Columns.FirstOrDefault(it => it.IsPrimarykey);
-            if (bPkColumn == null && navObjectNameColumnInfo.Navigat.AClassId.HasValue()) 
+            if (bPkColumn == null && navObjectNameColumnInfo.Navigat.BClassId.HasValue()) 
             {
-                bPkColumn= bEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == navObjectNameColumnInfo.Navigat.AClassId);
+                bPkColumn= bEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == navObjectNameColumnInfo.Navigat.BClassId);
             }
             Check.ExceptionEasy(bPkColumn==null, $"{bEntityInfo.EntityName} need primary key", $"{bEntityInfo.EntityName} 实体需要配置主键");
             var bDb = this.Context;
             bDb = GetCrossDatabase(bDb,bEntity);
             bDb.InitMappingInfo(bEntity);
             var listItemPkColumn = listItemEntity.Columns.Where(it => it.IsPrimarykey).FirstOrDefault();
-            if (listItemPkColumn == null && navObjectNameColumnInfo.Navigat.BClassId.HasValue()) 
+            if (listItemPkColumn == null && navObjectNameColumnInfo.Navigat.AClassId.HasValue()) 
             {
-                listItemPkColumn = listItemEntity.Columns.FirstOrDefault(it => it.PropertyName == navObjectNameColumnInfo.Navigat.BClassId);
+                listItemPkColumn = listItemEntity.Columns.FirstOrDefault(it => it.PropertyName == navObjectNameColumnInfo.Navigat.AClassId);
             }
             Check.ExceptionEasy(listItemPkColumn == null, $"{listItemEntity.EntityName} need primary key", $"{listItemEntity.EntityName} 实体需要配置主键");
             var ids = list.Select(it => it.GetType().GetProperty(listItemPkColumn.PropertyName).GetValue(it)).Select(it => it == null ? "null" : it).Distinct().ToList();
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToManyNavgateExpression.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToManyNavgateExpression.cs
index e60b55e3c..c6f1cac5a 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToManyNavgateExpression.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToManyNavgateExpression.cs
@@ -217,7 +217,7 @@ namespace SqlSugar
             }
             if (aPk == null)
             {
-                aPk = this.ProPertyEntity.Columns.FirstOrDefault(it => it.PropertyName == Navigat.AClassId)?.DbColumnName;
+                aPk = this.EntityInfo.Columns.FirstOrDefault(it => it.PropertyName == Navigat.AClassId)?.DbColumnName;
             }
             Check.ExceptionEasy(aPk.IsNullOrEmpty(), $"{this.EntityInfo.EntityName}need primary key", $"{this.EntityInfo.EntityName}需要主键");
             Check.ExceptionEasy(bPk.IsNullOrEmpty(), $"{this.ProPertyEntity.EntityName}need primary key", $"{this.ProPertyEntity.EntityName}需要主键");