diff --git a/Src/Asp.Net/SqlServerTest/UnitTest/UQueryable.cs b/Src/Asp.Net/SqlServerTest/UnitTest/UQueryable.cs
index b7c9de71c..94331dabe 100644
--- a/Src/Asp.Net/SqlServerTest/UnitTest/UQueryable.cs
+++ b/Src/Asp.Net/SqlServerTest/UnitTest/UQueryable.cs
@@ -200,6 +200,13 @@ namespace OrmTest
             db.Insertable(new UnitEnumadfa()).ExecuteCommand();
             db.Insertable(new UnitEnumadfa() {  Type=DbType.Sqlite}).ExecuteCommand();
             var listEnum=db.Queryable<UnitEnumadfa>().ToList();
+
+            var d111111 = db.Queryable<Order>()
+   .Where(it => it.Id== SqlFunc.IF(true).Return(1).End(0) )
+   .ToList();
+            var d1111111 = db.Queryable<Order>()
+.Where(it => it.Id == SqlFunc.IF(it.Id>0).Return(1).End(0))
+.ToList();
         }
 
 
diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/CaseWhen/CaseWhenResolve.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/CaseWhen/CaseWhenResolve.cs
index de7e7ad78..f26107e67 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/CaseWhen/CaseWhenResolve.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/CaseWhen/CaseWhenResolve.cs
@@ -55,6 +55,15 @@ namespace SqlSugar
                 else
                 {
                     var sql = SubTools.GetMethodValue(this.context, methodExp.Arguments[0], this.context.IsSingle ? ResolveExpressType.WhereSingle : ResolveExpressType.WhereMultiple);
+                    if (methodExp.Method.Name == "IF") 
+                    {
+                        var parameter = this.context.Parameters.FirstOrDefault(it => it.ParameterName == sql.Trim());
+                        if (parameter!=null&&parameter.Value is bool) 
+                        {
+                            sql = Convert.ToBoolean(parameter.Value) ? " 1=1 " : " 1=2 ";
+                            this.context.Parameters.Remove(parameter);
+                        }
+                    }
                     sqls.Add(new KeyValuePair<string, string>(methodExp.Method.Name, sql));
                 }
             }