diff --git a/condition_expr.go b/condition_expr.go
index ea3c0fd..bf191a3 100644
--- a/condition_expr.go
+++ b/condition_expr.go
@@ -198,7 +198,7 @@ func (this ConditionExpr) IsIgnoreEmptyParma(m contracts.ModelParam) bool {
 	return false
 }
 
-func NewExpr(rResource, rField, token string, operator contracts.ConditionOperator, tType contracts.ConditionTokenType, ignoreEmptyParma bool, fn, fnParam string) contracts.ConditionExpr {
+func NewConditionExpr(rResource, rField, token string, operator contracts.ConditionOperator, tType contracts.ConditionTokenType, ignoreEmptyParma bool, fn, fnParam string) contracts.ConditionExpr {
 	return &ConditionExpr{
 		operator:          operator,
 		field:             rField,
diff --git a/engine/engine_test.go b/engine/engine_test.go
index 1c50647..349103f 100644
--- a/engine/engine_test.go
+++ b/engine/engine_test.go
@@ -26,7 +26,7 @@ func TestEngine(t *testing.T) {
 
 	cond1 := condition.New(contracts.ConditionType_AND, "条件1")
 
-	cond1.SetExpr(condition.NewExpr(
+	cond1.SetExpr(condition.NewConditionExpr(
 		"TestTable", "age", "age",
 		contracts.ConditionOperator_EQ, contracts.ConditionTokenType_PARAM,
 		false, "", "",
@@ -65,7 +65,7 @@ func TestRelationEngine(t *testing.T) {
 	}
 
 	cond1 := condition.New(contracts.ConditionType_AND, "条件1").
-		SetExpr(condition.NewExpr(
+		SetExpr(condition.NewConditionExpr(
 			"TestTable", "age", "age",
 			contracts.ConditionOperator_EQ, contracts.ConditionTokenType_PARAM,
 			false, "", "",
@@ -77,12 +77,12 @@ func TestRelationEngine(t *testing.T) {
 	})
 
 	cond2 := condition.New(contracts.ConditionType_OR, "条件2").
-		SetExpr(condition.NewExpr(
+		SetExpr(condition.NewConditionExpr(
 			"TestTableA", "age", "age",
 			contracts.ConditionOperator_EQ, contracts.ConditionTokenType_PARAM,
 			false, "", "",
 		)).
-		SetExpr(condition.NewExpr(
+		SetExpr(condition.NewConditionExpr(
 			"TestTable", "age", "age",
 			contracts.ConditionOperator_EQ, contracts.ConditionTokenType_PARAM,
 			false, "", "",