diff --git a/ShadowEditor.Server.Go/helper/authority/operating_authority.go b/ShadowEditor.Server.Go/helper/authority/operating_authority.go
new file mode 100644
index 00000000..c517ea52
--- /dev/null
+++ b/ShadowEditor.Server.Go/helper/authority/operating_authority.go
@@ -0,0 +1,155 @@
+package authority
+
+// All return all operating authorities
+var All = map[string]string{
+	"Administrator":    Administrator,
+	"Login":            Login,
+	"ListAnimation":    ListAnimation,
+	"AddAnimation":     AddAnimation,
+	"EditAnimation":    EditAnimation,
+	"DeleteAnimation":  DeleteAnimation,
+	"ListAudio":        ListAudio,
+	"AddAudio":         AddAudio,
+	"EditAudio":        EditAudio,
+	"DeleteAudio":      DeleteAudio,
+	"ListCategory":     ListCategory,
+	"SaveCategory":     SaveCategory,
+	"DeleteCategory":   DeleteCategory,
+	"ListCharacter":    ListCharacter,
+	"EditCharacter":    EditCharacter,
+	"SaveCharacter":    SaveCharacter,
+	"DeleteCharacter":  DeleteCharacter,
+	"ListMap":          ListMap,
+	"AddMap":           AddMap,
+	"EditMap":          EditMap,
+	"DeleteMap":        DeleteMap,
+	"ListMaterial":     ListMaterial,
+	"EditMaterial":     EditMaterial,
+	"SaveMaterial":     SaveMaterial,
+	"DeleteMaterial":   DeleteMaterial,
+	"ListMesh":         ListMesh,
+	"AddMesh":          AddMesh,
+	"EditMesh":         EditMesh,
+	"DeleteMesh":       DeleteMesh,
+	"ListParticle":     ListParticle,
+	"EditParticle":     EditParticle,
+	"SaveParticle":     SaveParticle,
+	"DeleteParticle":   DeleteParticle,
+	"ListPrefab":       ListPrefab,
+	"EditPrefab":       EditPrefab,
+	"SavePrefab":       SavePrefab,
+	"DeletePrefab":     DeletePrefab,
+	"EditScene":        EditScene,
+	"SaveScene":        SaveScene,
+	"PublishScene":     PublishScene,
+	"DeleteScene":      DeleteScene,
+	"ListScreenshot":   ListScreenshot,
+	"AddScreenshot":    AddScreenshot,
+	"EditScreenshot":   EditScreenshot,
+	"DeleteScreenshot": DeleteScreenshot,
+	"ListVideo":        ListVideo,
+	"AddVideo":         AddVideo,
+	"EditVideo":        EditVideo,
+	"DeleteVideo":      DeleteVideo,
+}
+
+const (
+	// Administrator 管理员权限
+	Administrator string = "Administrator"
+	// Login 只有登录用户才能具有的权限
+	Login string = "Login"
+	// ListAnimation 获取动画列表（不具备该权限无法查看动画列表）
+	ListAnimation string = "List Animation"
+	// AddAnimation 添加动画
+	AddAnimation string = "Add Animation"
+	// EditAnimation 编辑动画
+	EditAnimation string = "Edit Animation"
+	// DeleteAnimation 删除动画
+	DeleteAnimation string = "Delete Animation"
+	// ListAudio 获取音频列表（不具备该权限无法查看音频列表）
+	ListAudio string = "List Audio"
+	// AddAudio 添加音频
+	AddAudio string = "Add Audio"
+	// EditAudio 编辑音频
+	EditAudio string = "Edit Audio"
+	// DeleteAudio 删除音频
+	DeleteAudio string = "Delete Audio"
+	// ListCategory 获取分类列表（不具有该权限无法进入分类窗口）
+	ListCategory string = "List Category"
+	// SaveCategory 保存分类
+	SaveCategory string = "Save Category"
+	// DeleteCategory 删除分类
+	DeleteCategory string = "Delete Category"
+	// ListCharacter 获取人物列表（不具备该权限无法进入人物列表）
+	ListCharacter string = "List Character"
+	// EditCharacter 编辑人物
+	EditCharacter string = "Edit Character"
+	// SaveCharacter 保存人物
+	SaveCharacter string = "Save Character"
+	// DeleteCharacter 删除人物
+	DeleteCharacter string = "Delete Character"
+	// ListMap 获取贴图列表（不具有该权限无法查看贴图列表）
+	ListMap string = "List Map"
+	// AddMap 添加贴图
+	AddMap string = "Add Map"
+	// EditMap 编辑贴图
+	EditMap string = "Edit Map"
+	// DeleteMap 删除贴图
+	DeleteMap string = "Delete Map"
+	// ListMaterial 获取材质列表（不具有该权限无法查看材质列表）
+	ListMaterial string = "List Material"
+	// EditMaterial 编辑材质
+	EditMaterial string = "Edit Material"
+	// SaveMaterial 保存材质
+	SaveMaterial string = "Save Material"
+	// DeleteMaterial 删除材质
+	DeleteMaterial string = "Delete Material"
+	// ListMesh 获取模型列表（不具有该权限无法查看模型列表）
+	ListMesh string = "List Mesh"
+	// AddMesh 添加模型
+	AddMesh string = "Add Mesh"
+	// EditMesh 编辑模型
+	EditMesh string = "Edit Mesh"
+	// DeleteMesh 删除模型
+	DeleteMesh string = "Delete Mesh"
+	// ListParticle 获取粒子列表（不具有该权限无法查看粒子列表）
+	ListParticle string = "List Particle"
+	// EditParticle 编辑粒子
+	EditParticle string = "Edit Particle"
+	// SaveParticle 保存粒子
+	SaveParticle string = "Save Particle"
+	// DeleteParticle 删除粒子
+	DeleteParticle string = "Delete Particle"
+	// ListPrefab 获取预设体列表（不具有该权限无法查看预设体列表）
+	ListPrefab string = "List Prefab"
+	// EditPrefab 编辑预设体
+	EditPrefab string = "Edit Prefab"
+	// SavePrefab 保存预设体
+	SavePrefab string = "SavePrefab"
+	// DeletePrefab 删除预设体
+	DeletePrefab string = "Delete Prefab"
+	// EditScene 编辑场景
+	EditScene string = "Edit Scene"
+	// SaveScene 保存场景
+	SaveScene string = "Save Scene"
+	// PublishScene 发布场景
+	PublishScene string = "Publish Scene"
+	// DeleteScene 删除场景
+	DeleteScene string = "Delete Scene"
+	// ListScreenshot 获取截图列表（不具有该权限无法查看截图列表）
+	ListScreenshot string = "List Screenshot"
+	// AddScreenshot 添加截图
+	AddScreenshot string = "Add Screenshot"
+	// EditScreenshot 编辑截图
+	EditScreenshot string = "Edit Screenshot"
+	// DeleteScreenshot 删除截图
+	DeleteScreenshot string = "Delete Screenshot"
+	// ListVideo 获取视频列表（不具有该权限无法查看视频列表）
+	ListVideo string = "List Video"
+	// AddVideo 添加视频
+	AddVideo string = "Add Video"
+	// EditVideo 编辑视频
+	EditVideo string = "Edit Video"
+	// DeleteVideo 删除视频
+	DeleteVideo string = "Delete Video"
+)
diff --git a/ShadowEditor.Server.Go/helper/mongo_test.go b/ShadowEditor.Server.Go/helper/mongo_test.go
index 32d8d0e1..215c9155 100644
--- a/ShadowEditor.Server.Go/helper/mongo_test.go
+++ b/ShadowEditor.Server.Go/helper/mongo_test.go
@@ -16,7 +16,7 @@ func TestMongo(t *testing.T) {
 		return
 	}
 
-	db, err := Mongo(config.Database.Connection, config.Database.Database)
+	db, err := NewMongo(config.Database.Connection, config.Database.Database)
 	if err != nil {
 		t.Error(err)
 		return
diff --git a/ShadowEditor.Server.Go/helper/operating_authority.go b/ShadowEditor.Server.Go/helper/operating_authority.go
new file mode 100644
index 00000000..2b3c041f
--- /dev/null
+++ b/ShadowEditor.Server.Go/helper/operating_authority.go
@@ -0,0 +1,20 @@
+package helper
+
+import (
+	"github.com/tengge1/shadoweditor/helper/authority"
+	"github.com/tengge1/shadoweditor/model/system"
+)
+
+// GetAllOperatingAuthorities Get all operatingAuthorities
+func GetAllOperatingAuthorities() []system.OperatingAuthority {
+	authorities := []system.OperatingAuthority{}
+
+	for key, value := range authority.All {
+		authorities = append(authorities, system.OperatingAuthority{
+			ID:   key,
+			Name: value,
+		})
+	}
+
+	return authorities
+}
diff --git a/ShadowEditor.Server.Go/helper/operating_authority_test.go b/ShadowEditor.Server.Go/helper/operating_authority_test.go
new file mode 100644
index 00000000..1f84b9bb
--- /dev/null
+++ b/ShadowEditor.Server.Go/helper/operating_authority_test.go
@@ -0,0 +1,11 @@
+package helper
+
+import "testing"
+
+func TestGetAllOperatingAuthorities(t *testing.T) {
+	authorities := GetAllOperatingAuthorities()
+
+	for _, item := range authorities {
+		t.Log(item)
+	}
+}
diff --git a/ShadowEditor.Server.Go/helper/user.go b/ShadowEditor.Server.Go/helper/user.go
index 90592008..b52b730b 100644
--- a/ShadowEditor.Server.Go/helper/user.go
+++ b/ShadowEditor.Server.Go/helper/user.go
@@ -1,17 +1,23 @@
 package helper
 
 import (
+	"context"
+	"fmt"
+
+	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/bson/primitive"
 
 	"github.com/tengge1/shadoweditor/model/system"
 )
 
+// GetCurrentUser get the current login user
 func GetCurrentUser() (*system.User, error) {
 	return nil, nil
 }
 
+// GetUser get a user from userID
 func GetUser(userID string) (*system.User, error) {
-	_, err := primitive.ObjectIDFromHex(userID)
+	objectID, err := primitive.ObjectIDFromHex(userID)
 	if err != nil {
 		return nil, err
 	}
@@ -21,6 +27,40 @@ func GetUser(userID string) (*system.User, error) {
 		return nil, err
 	}
 
-	_ = mongo.Collection(UserCollectionName)
-	return nil, nil
+	collection := mongo.Collection(UserCollectionName)
+
+	filter := bson.M{
+		"ID": objectID,
+	}
+
+	result := collection.FindOne(context.TODO(), filter)
+	if result == nil {
+		return nil, fmt.Errorf("user (%v) is not found", userID)
+	}
+
+	user := system.User{}
+	result.Decode(&user)
+
+	// get roles and authorities
+	if user.RoleID != "" {
+		objectID, err := primitive.ObjectIDFromHex(user.RoleID)
+		if err != nil {
+			return nil, err
+		}
+
+		filter = bson.M{
+			"ID": objectID,
+		}
+		result = collection.FindOne(context.TODO(), filter)
+
+		if result != nil {
+			role := system.Role{}
+			result.Decode(&role)
+
+			user.RoleID = role.ID
+			user.RoleName = role.Name
+		}
+	}
+
+	return &user, nil
 }