diff --git a/common/common.go b/common/common.go
deleted file mode 100644
index 74f9975..0000000
--- a/common/common.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package common
-
-// TernaryOperator if true return trueValue else return falseValue
-func TernaryOperator[T any](isTrue bool, trueValue T, falseValue T) T {
-	if isTrue {
-		return trueValue
-	} else {
-		return falseValue
-	}
-}
diff --git a/condition/condition.go b/condition/condition.go
new file mode 100644
index 0000000..f1b3b7e
--- /dev/null
+++ b/condition/condition.go
@@ -0,0 +1,14 @@
+// Copyright 2021 dudaodong@gmail.com. All rights reserved.
+// Use of this source code is governed by MIT license
+
+// Package condition contains some functions for conditional judgment. eg. And, Or, TernaryOperator ...
+package condition
+
+// TernaryOperator if true return trueValue else return falseValue
+func TernaryOperator[T any](isTrue bool, trueValue T, falseValue T) T {
+	if isTrue {
+		return trueValue
+	} else {
+		return falseValue
+	}
+}
diff --git a/common/common_test.go b/condition/condition_test.go
similarity index 93%
rename from common/common_test.go
rename to condition/condition_test.go
index 71a02bf..50b454b 100644
--- a/common/common_test.go
+++ b/condition/condition_test.go
@@ -1,8 +1,9 @@
-package common
+package condition
 
 import (
-	"github.com/duke-git/lancet/v2/internal"
 	"testing"
+
+	"github.com/duke-git/lancet/v2/internal"
 )
 
 func TestTernaryOperator(t *testing.T) {