diff --git a/slice.go b/slice.go
index 6627ebb..97d3bf8 100644
--- a/slice.go
+++ b/slice.go
@@ -3,6 +3,11 @@
  */
 package helper
 
+import (
+	"errors"
+	"fmt"
+)
+
 // 求差集
 func Diff(slice1, slice2 []string) []string {
 	m := make(map[string]int)
@@ -52,5 +57,32 @@ func Union(slice1, slice2 []string) []string {
 		}
 	}
 	return slice1
+}
 
+func Unique(originals interface{}) (interface{}, error) {
+	temp := map[string]struct{}{}
+	switch slice := originals.(type) {
+	case []string:
+		result := make([]string, 0, len(originals.([]string)))
+		for _, item := range slice {
+			key := fmt.Sprint(item)
+			if _, ok := temp[key]; !ok {
+				temp[key] = struct{}{}
+				result = append(result, item)
+			}
+		}
+		return result, nil
+	case []int64:
+		result := make([]int64, 0, len(originals.([]int64)))
+		for _, item := range slice {
+			key := fmt.Sprint(item)
+			if _, ok := temp[key]; !ok {
+				temp[key] = struct{}{}
+				result = append(result, item)
+			}
+		}
+		return result, nil
+	default:
+		return nil, errors.New(fmt.Sprintf("Unknown type: %T", slice))
+	}
 }
diff --git a/slice_test.go b/slice_test.go
index 9217c1b..118a6bc 100644
--- a/slice_test.go
+++ b/slice_test.go
@@ -25,3 +25,9 @@ func Test_Union(t *testing.T) {
 	cc := Union(aa, bb)
 	fmt.Println(cc)
 }
+
+func Test_Unique(t *testing.T) {
+	var str = []string{"1", "2", "2"}
+	ret, err := Unique(str)
+	fmt.Println(ret, err)
+}