diff --git a/container/gtree/gtree_z_example_btree_test.go b/container/gtree/gtree_z_example_btree_test.go
index f96f52a07..315a99959 100644
--- a/container/gtree/gtree_z_example_btree_test.go
+++ b/container/gtree/gtree_z_example_btree_test.go
@@ -2,6 +2,156 @@
 //
 // This Source Code Form is subject to the terms of the MIT License.
 // If a copy of the MIT was not distributed with gm file,
-// You can obtain one at https://github.com/gogf/gf.
+// You can obtain one at https://github.com/Agogf/gf.
 
 package gtree_test
+
+func ExampleBTree_Clone() {
+
+}
+
+func ExampleBTree_Set() {
+
+}
+
+func ExampleBTree_Sets() {
+
+}
+
+func ExampleBTree_Get() {
+
+}
+
+func ExampleBTree_GetOrSet() {
+
+}
+
+func ExampleBTree_GetOrSetFunc() {
+
+}
+
+func ExampleBTree_GetOrSetFuncLock() {
+
+}
+
+func ExampleBTree_GetVar() {
+
+}
+
+func ExampleBTree_GetVarOrSet() {
+
+}
+
+func ExampleBTree_GetVarOrSetFunc() {
+
+}
+
+func ExampleBTree_GetVarOrSetFuncLock() {
+
+}
+
+func ExampleBTree_SetIfNotExist() {
+
+}
+
+func ExampleBTree_SetIfNotExistFunc() {
+
+}
+
+func ExampleBTree_SetIfNotExistFuncLock() {
+
+}
+
+func ExampleBTree_Contains() {
+
+}
+func ExampleBTree_Remove() {
+
+}
+
+func ExampleBTree_Removes() {
+
+}
+
+func ExampleBTree_IsEmpty() {
+
+}
+
+func ExampleBTree_Size() {
+
+}
+
+func ExampleBTree_Keys() {
+
+}
+
+func ExampleBTree_Values() {
+
+}
+
+func ExampleBTree_Map() {
+
+}
+func ExampleBTree_MapStrAny() {
+
+}
+
+func ExampleBTree_Clear() {
+
+}
+
+func ExampleBTree_Replace() {
+
+}
+
+func ExampleBTree_Height() {
+
+}
+
+func ExampleBTree_Left() {
+
+}
+
+func ExampleBTree_Right() {
+
+}
+
+func ExampleBTree_String() {
+
+}
+
+func ExampleBTree_Search() {
+
+}
+
+func ExampleBTree_Print() {
+
+}
+
+func ExampleBTree_Iterator() {
+
+}
+
+func ExampleBTree_IteratorFrom() {
+
+}
+
+func ExampleBTree_IteratorAsc() {
+
+}
+
+func ExampleBTree_IteratorAscFrom() {
+
+}
+
+func ExampleBTree_IteratorDesc() {
+
+}
+
+func ExampleBTree_IteratorDescFrom() {
+
+}
+
+func ExampleBTree_MarshalJSON() {
+
+}
diff --git a/container/gtree/gtree_z_example_test.go b/container/gtree/gtree_z_example_test.go
new file mode 100644
index 000000000..4ea8a7ae5
--- /dev/null
+++ b/container/gtree/gtree_z_example_test.go
@@ -0,0 +1,64 @@
+// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with gm file,
+// You can obtain one at https://github.com/Agogf/gf.
+
+package gtree_test
+
+import (
+	"fmt"
+	"github.com/gogf/gf/v2/container/gtree"
+	"github.com/gogf/gf/v2/util/gconv"
+	"github.com/gogf/gf/v2/util/gutil"
+)
+
+func ExampleNewAVLTree() {
+
+}
+
+func ExampleNewAVLTreeFrom() {
+
+}
+
+func ExampleNewBTree() {
+	bTree := gtree.NewBTree(3, gutil.ComparatorString)
+	for i := 0; i < 6; i++ {
+		bTree.Set("key"+gconv.String(i), "val"+gconv.String(i))
+	}
+	fmt.Println(bTree)
+
+	// output:
+	// key0
+	// key1
+	//     key2
+	// key3
+	//     key4
+	//     key5
+}
+
+func ExampleNewBTreeFrom() {
+	bTree := gtree.NewBTree(3, gutil.ComparatorString)
+	for i := 0; i < 6; i++ {
+		bTree.Set("key"+gconv.String(i), "val"+gconv.String(i))
+	}
+
+	otherBTree := gtree.NewBTreeFrom(3, gutil.ComparatorString, bTree.Map())
+	fmt.Println(otherBTree)
+
+	// output:
+	// key0
+	// key1
+	//     key2
+	// key3
+	//     key4
+	//     key5
+}
+
+func ExampleNewRedBlackTree() {
+
+}
+
+func ExampleNewRedBlackTreeFrom() {
+
+}