diff --git a/internal/schema/user_schema.go b/internal/schema/user_schema.go
index 9693c0a4..a30f227f 100644
--- a/internal/schema/user_schema.go
+++ b/internal/schema/user_schema.go
@@ -4,14 +4,12 @@ import (
 	"encoding/json"
 
 	"github.com/answerdev/answer/internal/base/constant"
-	"github.com/answerdev/answer/internal/base/reason"
 	"github.com/answerdev/answer/internal/base/validator"
 	"github.com/answerdev/answer/internal/entity"
 	"github.com/answerdev/answer/pkg/checker"
 	"github.com/answerdev/answer/pkg/converter"
 	"github.com/answerdev/answer/pkg/gravatar"
 	"github.com/jinzhu/copier"
-	"github.com/segmentfault/pacman/errors"
 )
 
 // UserVerifyEmailReq user verify email request
@@ -300,7 +298,7 @@ func (u *UserModifyPassWordRequest) Check() (errFields []*validator.FormErrorFie
 
 type UpdateInfoRequest struct {
 	// display_name
-	DisplayName string `validate:"required,gt=0,lte=30" json:"display_name"`
+	DisplayName string `validate:"omitempty,gt=0,lte=30" json:"display_name"`
 	// username
 	Username string `validate:"omitempty,gt=3,lte=30" json:"username"`
 	// avatar
@@ -329,16 +327,6 @@ func (a *AvatarInfo) ToJsonString() string {
 }
 
 func (req *UpdateInfoRequest) Check() (errFields []*validator.FormErrorField, err error) {
-	if len(req.Username) > 0 {
-		if checker.IsInvalidUsername(req.Username) {
-			errField := &validator.FormErrorField{
-				ErrorField: "username",
-				ErrorMsg:   reason.UsernameInvalid,
-			}
-			errFields = append(errFields, errField)
-			return errFields, errors.BadRequest(reason.UsernameInvalid)
-		}
-	}
 	req.BioHTML = converter.Markdown2BasicHTML(req.Bio)
 	return nil, nil
 }
diff --git a/internal/service/user_service.go b/internal/service/user_service.go
index e417f5a9..19e97550 100644
--- a/internal/service/user_service.go
+++ b/internal/service/user_service.go
@@ -259,15 +259,23 @@ func (us *UserService) UpdateInfo(ctx context.Context, req *schema.UpdateInfoReq
 	if err != nil {
 		return nil, err
 	}
-	oldUserInfo, exist, err := us.userRepo.GetByUserID(ctx, req.UserID)
-	if err != nil {
-		return nil, err
-	}
-	if !exist {
-		return nil, errors.BadRequest(reason.UserNotFound)
-	}
 
-	if len(req.Username) > 0 {
+	if siteUsers.AllowUpdateUsername && len(req.Username) > 0 {
+		if checker.IsInvalidUsername(req.Username) {
+			errFields = append(errFields, &validator.FormErrorField{
+				ErrorField: "username",
+				ErrorMsg:   reason.UsernameInvalid,
+			})
+			return errFields, errors.BadRequest(reason.UsernameInvalid)
+		}
+		if checker.IsReservedUsername(req.Username) {
+			errFields = append(errFields, &validator.FormErrorField{
+				ErrorField: "username",
+				ErrorMsg:   reason.UsernameInvalid,
+			})
+			return errFields, errors.BadRequest(reason.UsernameInvalid)
+		}
+
 		userInfo, exist, err := us.userRepo.GetByUsername(ctx, req.Username)
 		if err != nil {
 			return nil, err
@@ -279,13 +287,14 @@ func (us *UserService) UpdateInfo(ctx context.Context, req *schema.UpdateInfoReq
 			})
 			return errFields, errors.BadRequest(reason.UsernameDuplicate)
 		}
-		if checker.IsReservedUsername(req.Username) {
-			errFields = append(errFields, &validator.FormErrorField{
-				ErrorField: "username",
-				ErrorMsg:   reason.UsernameInvalid,
-			})
-			return errFields, errors.BadRequest(reason.UsernameInvalid)
-		}
+	}
+
+	oldUserInfo, exist, err := us.userRepo.GetByUserID(ctx, req.UserID)
+	if err != nil {
+		return nil, err
+	}
+	if !exist {
+		return nil, errors.BadRequest(reason.UserNotFound)
 	}
 
 	cond := us.formatUserInfoForUpdateInfo(oldUserInfo, req, siteUsers)
@@ -307,13 +316,13 @@ func (us *UserService) formatUserInfoForUpdateInfo(
 	userInfo.Location = oldUserInfo.Location
 	userInfo.ID = req.UserID
 
-	if siteUsersConf.AllowUpdateDisplayName {
+	if len(req.DisplayName) > 0 && siteUsersConf.AllowUpdateDisplayName {
 		userInfo.DisplayName = req.DisplayName
 	}
-	if siteUsersConf.AllowUpdateUsername {
+	if len(req.Username) > 0 && siteUsersConf.AllowUpdateUsername {
 		userInfo.Username = req.Username
 	}
-	if siteUsersConf.AllowUpdateAvatar {
+	if len(avatar) > 0 && siteUsersConf.AllowUpdateAvatar {
 		userInfo.Avatar = string(avatar)
 	}
 	if siteUsersConf.AllowUpdateBio {
diff --git a/plugin/plugin.go b/plugin/plugin.go
index f6b541ac..7f6e4a41 100644
--- a/plugin/plugin.go
+++ b/plugin/plugin.go
@@ -136,7 +136,7 @@ type TranslateFn func(ctx *GinContext) string
 
 // Translator contains a function that translates the key to the current language of the context
 type Translator struct {
-	fn TranslateFn
+	Fn TranslateFn
 }
 
 // MakeTranslator generates a translator from the key
@@ -144,13 +144,13 @@ func MakeTranslator(key string) Translator {
 	t := func(ctx *GinContext) string {
 		return Translate(ctx, key)
 	}
-	return Translator{fn: t}
+	return Translator{Fn: t}
 }
 
 // Translate translates the key to the current language of the context
 func (t Translator) Translate(ctx *GinContext) string {
-	if &t == nil || t.fn == nil {
+	if &t == nil || t.Fn == nil {
 		return ""
 	}
-	return t.fn(ctx)
+	return t.Fn(ctx)
 }