diff --git a/CHANGELOG.md b/CHANGELOG.md
index 50a51959..58849ce6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,8 @@
-## v1.0.32 / 2021-12-25
+## v1.0.33 / 2021-12-25
 
-- 优化aes方法
-- 增加base64方法
+- 优化 preg 方法
+- 优化 aes 方法
+- 增加 base64 方法
 
 ## v1.0.31 / 2021-12-24
 
diff --git a/library.go b/library.go
index deadb4c8..4bf2fc72 100644
--- a/library.go
+++ b/library.go
@@ -1,5 +1,5 @@
 package go_library
 
 func Version() string {
-	return "v1.0.32"
+	return "v1.0.33"
 }
diff --git a/utils/goarray/goarray.go b/utils/goarray/goarray.go
new file mode 100644
index 00000000..d3589e1c
--- /dev/null
+++ b/utils/goarray/goarray.go
@@ -0,0 +1,5 @@
+package goarray
+
+func Grouping() {
+
+}
diff --git a/utils/goarray/goarray_test.go b/utils/goarray/goarray_test.go
new file mode 100644
index 00000000..e34fb096
--- /dev/null
+++ b/utils/goarray/goarray_test.go
@@ -0,0 +1 @@
+package goarray
diff --git a/utils/goint/goint_test.go b/utils/goint/goint_test.go
index f310a017..7c93ce04 100644
--- a/utils/goint/goint_test.go
+++ b/utils/goint/goint_test.go
@@ -1,14 +1,13 @@
 package goint
 
 import (
-	"fmt"
 	"testing"
 )
 
 func TestToString(t *testing.T) {
-	fmt.Println(ToString(2222))
+	t.Log(ToString(9898))
 }
 
 func TestToFloat64(t *testing.T) {
-	fmt.Println(ToFloat64(2222))
+	t.Log(ToFloat64(9898))
 }
diff --git a/utils/goint64/goint64_test.go b/utils/goint64/goint64_test.go
new file mode 100644
index 00000000..5c56c7f8
--- /dev/null
+++ b/utils/goint64/goint64_test.go
@@ -0,0 +1 @@
+package goint64
diff --git a/utils/gomd5/gomd5_test.go b/utils/gomd5/gomd5_test.go
index 2740662a..f8853b53 100644
--- a/utils/gomd5/gomd5_test.go
+++ b/utils/gomd5/gomd5_test.go
@@ -1,12 +1,11 @@
 package gomd5
 
 import (
-	"fmt"
 	"testing"
 )
 
 func TestMd5(t *testing.T) {
-	fmt.Println(GetMD5Encode("测试"))
-	fmt.Println(ToUpper(GetMD5Encode("测试")))
-	fmt.Println(ToUpper("测试"))
+	t.Logf(GetMD5Encode("测试"))
+	t.Logf(ToUpper(GetMD5Encode("测试")))
+	t.Logf(ToUpper("测试"))
 }
diff --git a/utils/preg/preg.go b/utils/gopreg/gopreg.go
similarity index 98%
rename from utils/preg/preg.go
rename to utils/gopreg/gopreg.go
index 44bec8d8..69311aad 100644
--- a/utils/preg/preg.go
+++ b/utils/gopreg/gopreg.go
@@ -1,4 +1,4 @@
-package preg
+package gopreg
 
 import (
 	"regexp"
diff --git a/utils/preg/preg_test.go b/utils/gopreg/gopreg_test.go
similarity index 77%
rename from utils/preg/preg_test.go
rename to utils/gopreg/gopreg_test.go
index 6760f880..e96eb1e8 100644
--- a/utils/preg/preg_test.go
+++ b/utils/gopreg/gopreg_test.go
@@ -1,4 +1,4 @@
-package preg
+package gopreg
 
 import "testing"