diff --git a/condition_expr.go b/condition_expr.go
index 950b656..c106d2b 100644
--- a/condition_expr.go
+++ b/condition_expr.go
@@ -260,11 +260,11 @@ func FieldSqlFn(fn, fnParam string) ExprOption {
 	}
 }
 
-func NewExpr(rResource, rField, token string, opts ...ExprOption) *ConditionExpr {
+func NewExpr(rResource, rField string, opts ...ExprOption) *ConditionExpr {
 	expr := &ConditionExpr{
 		field:             rField,
 		fieldResource:     rResource,
-		token:             token,
+		token:             "",
 		tokenType:         STRING,
 		operator:          EQ,
 		ignoreEmptyParma:  false,
diff --git a/engine/engine_test.go b/engine/engine_test.go
index 2896640..a24462c 100644
--- a/engine/engine_test.go
+++ b/engine/engine_test.go
@@ -25,10 +25,7 @@ func TestEngine(t *testing.T) {
 
 	cond1 := condition.New(condition.Describe("条件1"))
 
-	cond1.SetExpr(condition.NewExpr(
-		"TestTable", "age", "age",
-		condition.TokenType(condition.PARAM),
-	))
+	cond1.SetExpr(condition.NewExpr("TestTable", "age", condition.Token("age", condition.PARAM)))
 
 	engine.Case(cond1, func(data any, g req.GlobalParams) error {
 		t.Log("cond1", data)
@@ -66,10 +63,7 @@ func TestRelationEngine(t *testing.T) {
 	}
 
 	cond1 := condition.New(condition.Describe("条件1")).
-		SetExpr(condition.NewExpr(
-			"TestTable", "age", "age",
-			condition.TokenType(condition.PARAM),
-		))
+		SetExpr(condition.NewExpr("TestTable", "age", condition.Token("age", condition.PARAM)))
 
 	engine.Case(cond1, func(data any, g req.GlobalParams) error {
 		t.Log("cond1", data)
@@ -77,14 +71,8 @@ func TestRelationEngine(t *testing.T) {
 	})
 
 	cond2 := condition.New(condition.Type(condition.OR), condition.Describe("条件2")).
-		SetExpr(condition.NewExpr(
-			"TestTableA", "age", "age",
-			condition.TokenType(condition.PARAM),
-		)).
-		SetExpr(condition.NewExpr(
-			"TestTable", "age", "age",
-			condition.TokenType(condition.PARAM),
-		))
+		SetExpr(condition.NewExpr("TestTableA", "age", condition.Token("age", condition.PARAM))).
+		SetExpr(condition.NewExpr("TestTable", "age", condition.Token("age", condition.PARAM)))
 
 	engine.Case(cond2, func(data any, g req.GlobalParams) error {
 		t.Log("cond2", data)