diff --git a/app/user_center/model/user_coin_model.go b/app/user_center/model/user_coin_model.go
index e72a141..86ec935 100644
--- a/app/user_center/model/user_coin_model.go
+++ b/app/user_center/model/user_coin_model.go
@@ -16,7 +16,6 @@ type (
 	// and implement the added methods in customUserCoinModel.
 	UserCoinModel interface {
 		userCoinModel
-		UpdateCoin(ctx context.Context, tx *gorm.DB, integral *UserCoin) error
 		// ChangeCoin 用户弹币变动
 		ChangeCoin(ctx context.Context, tx *gorm.DB, userId int64, change int64) (int64, error)
 	}
@@ -33,7 +32,7 @@ func NewUserCoinModel(conn *gorm.DB) UserCoinModel {
 	}
 }
 
-func (m *customUserCoinModel) UpdateCoin(ctx context.Context, tx *gorm.DB, coin *UserCoin) error {
+func (m *customUserCoinModel) updateCoin(ctx context.Context, tx *gorm.DB, coin *UserCoin) error {
 	if coin.Coin < 0 {
 		return errors.New("无法将弹币更新至负数")
 	}
@@ -55,8 +54,8 @@ func (m *customUserCoinModel) ChangeCoin(ctx context.Context, tx *gorm.DB, userI
 					}
 					// 用户积分记录不存在,进行插入
 					if err = m.Insert(ctx, tx, &UserCoin{
-						UserId:   userId,
-						Coin: change,
+						UserId: userId,
+						Coin:   change,
 					}); err != nil {
 						return nerr.NewError(nerr.NewUserCoinErr, "新建用户弹币记录失败")
 					}
@@ -69,7 +68,7 @@ func (m *customUserCoinModel) ChangeCoin(ctx context.Context, tx *gorm.DB, userI
 				return nerr.NewError(nerr.UserCoinNotEnoughErr, "用户弹币不足")
 			}
 			data.Coin += change
-			if err = m.UpdateCoin(ctx, tx, data); err != nil {
+			if err = m.updateCoin(ctx, tx, data); err != nil {
 				if errors.Is(err, gormx.ErrRowsAffectedZero) {
 					return err
 				}