diff --git a/docs/fileutil.md b/docs/fileutil.md
index 70e591e..4025ecd 100644
--- a/docs/fileutil.md
+++ b/docs/fileutil.md
@@ -108,7 +108,7 @@ func main() {
 
 ### <span id="CreateDir">CreateDir</span>
 
-<p>Create directory in absolute path. param `absPath` like /a/, /a/b/.</p>
+<p>Create directory in absolute path. param `absPath` like /a, /a/b.</p>
 
 <b>Signature:</b>
 
@@ -127,7 +127,7 @@ import (
 )
 
 func main() {
-    err := fileutil.CreateDir("/a/")
+    err := fileutil.CreateDir("/a/b") // will create folder /a/b
     fmt.Println(err)
 }
 ```
diff --git a/docs/fileutil_zh-CN.md b/docs/fileutil_zh-CN.md
index b68cbd1..57f6f8c 100644
--- a/docs/fileutil_zh-CN.md
+++ b/docs/fileutil_zh-CN.md
@@ -108,7 +108,7 @@ func main() {
 
 ### <span id="CreateDir">CreateDir</span>
 
-<p>使用绝对路径创建嵌套目录，例如/a/, /a/b/</p>
+<p>使用绝对路径创建嵌套目录，例如/a/, /a/b</p>
 
 <b>函数签名:</b>
 
@@ -127,7 +127,7 @@ import (
 )
 
 func main() {
-    err := fileutil.CreateDir("/a/")
+    err := fileutil.CreateDir("/a/b") // will create folder /a/b
     fmt.Println(err)
 }
 ```
diff --git a/fileutil/file.go b/fileutil/file.go
index d0e48cb..7ed2b38 100644
--- a/fileutil/file.go
+++ b/fileutil/file.go
@@ -52,7 +52,8 @@ func CreateFile(path string) bool {
 // CreateDir create directory in absolute path. param `absPath` like /a/, /a/b/.
 // Play: https://go.dev/play/p/qUuCe1OGQnM
 func CreateDir(absPath string) error {
-	return os.MkdirAll(path.Dir(absPath), os.ModePerm)
+	// return os.MkdirAll(path.Dir(absPath), os.ModePerm)
+	return os.MkdirAll(absPath, os.ModePerm)
 }
 
 // IsDir checks if the path is directory or not.
diff --git a/fileutil/file_example_test.go b/fileutil/file_example_test.go
index ece96a6..9bca78b 100644
--- a/fileutil/file_example_test.go
+++ b/fileutil/file_example_test.go
@@ -39,7 +39,7 @@ func ExampleCreateFile() {
 
 func ExampleCreateDir() {
 	pwd, _ := os.Getwd()
-	dirPath := pwd + "/test_xxx/"
+	dirPath := pwd + "/createdir/a/b"
 
 	result1 := IsExist(dirPath)
 
@@ -48,16 +48,22 @@ func ExampleCreateDir() {
 		return
 	}
 
-	result2 := IsExist(dirPath)
-
-	os.Remove(dirPath)
+	result2 := IsExist(pwd + "/createdir/")
+	result3 := IsExist(pwd + "/createdir/a")
+	result4 := IsExist(pwd + "/createdir/a/b")
 
 	fmt.Println(result1)
 	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+
+	os.RemoveAll(pwd + "/createdir/")
 
 	// Output:
 	// false
 	// true
+	// true
+	// true
 }
 
 func ExampleIsDir() {
diff --git a/fileutil/file_test.go b/fileutil/file_test.go
index 70f907d..c16267c 100644
--- a/fileutil/file_test.go
+++ b/fileutil/file_test.go
@@ -50,7 +50,7 @@ func TestCreateDir(t *testing.T) {
 		t.FailNow()
 	}
 
-	dirPath := pwd + "/a/"
+	dirPath := pwd + "/a/b"
 	err = CreateDir(dirPath)
 	if err != nil {
 		t.Error(err)
@@ -58,7 +58,9 @@ func TestCreateDir(t *testing.T) {
 	}
 
 	assert.Equal(true, IsExist(dirPath))
-	os.Remove(dirPath)
+
+	os.RemoveAll(pwd + "/a")
+
 	assert.Equal(false, IsExist(dirPath))
 }