diff --git a/action.go b/action.go
index 3774fdd..8c8b708 100644
--- a/action.go
+++ b/action.go
@@ -65,7 +65,7 @@ func (s Service) HasPermission(userID, permission string) bool {
 }
 
 // UpdateUserAvatar ...
-func (s Service) UpdateUserAvatar(userID, avatar string) error {
+func (s Service) UpdateUserAvatar(userID string, avatar interface{}) error {
 	return user.UpdateAvatar(userID, avatar)
 }
 
diff --git a/model/db.go b/model/db.go
index 6eec155..1a34908 100644
--- a/model/db.go
+++ b/model/db.go
@@ -28,7 +28,7 @@ type DBUser struct {
 	Status                  string             `bson:"status"`
 	RoleID                  primitive.ObjectID `bson:"roleId"`
 	RequireToChangePassword bool               `bson:"requireToChangePassword"`
-	Avatar                  string             `bson:"avatar"`
+	Avatar                  interface{}        `bson:"avatar"`
 	Deleted                 bool               `bson:"deleted"`
 	Other                   interface{}        `bson:"other"` // object
 	CreatedAt               time.Time          `bson:"createdAt"`
diff --git a/model/user_request.go b/model/user_request.go
index 9e3f2a3..ccdc684 100644
--- a/model/user_request.go
+++ b/model/user_request.go
@@ -16,6 +16,7 @@ type UserCreateOptions struct {
 	RoleID                  string
 	RequireToChangePassword bool
 	Other                   interface{}
+	Avatar                  interface{} // if not, pass default file object
 }
 
 // UserUpdateOptions ...
diff --git a/model/user_response.go b/model/user_response.go
index 47872cb..b6bf148 100644
--- a/model/user_response.go
+++ b/model/user_response.go
@@ -13,6 +13,7 @@ type User struct {
 	Status    string      `json:"status"`
 	Role      RoleShort   `json:"role"`
 	Other     interface{} `json:"other"`
+	Avatar    interface{} `json:"avatar"`
 	CreatedAt time.Time   `json:"createdAt"`
 	UpdatedAt time.Time   `json:"updatedAt"`
 }
diff --git a/user/handle.go b/user/handle.go
index dae3dc9..b6062bd 100644
--- a/user/handle.go
+++ b/user/handle.go
@@ -70,6 +70,7 @@ func newUser(payload model.UserCreateOptions) model.DBUser {
 		Status:                  payload.Status,
 		RoleID:                  roleID,
 		Other:                   payload.Other,
+		Avatar:                  payload.Avatar,
 		CreatedAt:               timeNow,
 		UpdatedAt:               timeNow,
 	}
@@ -177,6 +178,7 @@ func getResponse(ctx context.Context, user model.DBUser) model.User {
 			Level:   roleRaw.Level,
 			IsAdmin: roleRaw.IsAdmin,
 		},
+		Avatar:    user.Avatar,
 		Other:     user.Other,
 		CreatedAt: user.CreatedAt,
 		UpdatedAt: user.UpdatedAt,
@@ -443,12 +445,12 @@ func checkUserHasPermissionFromCache(roleID primitive.ObjectID, permission strin
 }
 
 // UpdateAvatar ...
-func UpdateAvatar(userID string, avatar string) error {
+func UpdateAvatar(userID string, avatar interface{}) error {
 	var (
 		ctx = context.Background()
 	)
 
-	if avatar == "" {
+	if avatar == nil {
 		return errors.New("no avatar data")
 	}