diff --git a/go.mod b/go.mod
index bd92535..863df84 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module git.hlsq.asia/mmorpg/service-user
 go 1.24.0
 
 require (
-	git.hlsq.asia/mmorpg/service-common v0.0.0-20260130025300-427fca7ed19f
+	git.hlsq.asia/mmorpg/service-common v0.0.0-20260130035320-5dc5391b07ed
 	github.com/judwhite/go-svc v1.2.1
 	google.golang.org/grpc v1.77.0
 	gorm.io/gen v0.3.27
diff --git a/go.sum b/go.sum
index cc704e3..3d0e6e1 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,7 @@
 filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
-git.hlsq.asia/mmorpg/service-common v0.0.0-20260130025300-427fca7ed19f h1:U0HnB8i3ZTKrg3XBQpwFcI64LB6mraj02yNAqV3MBws=
-git.hlsq.asia/mmorpg/service-common v0.0.0-20260130025300-427fca7ed19f/go.mod h1:mMhZcumphj6gaVTppVYsMTkd+5HupmQgAc53Pd4MH9I=
+git.hlsq.asia/mmorpg/service-common v0.0.0-20260130035320-5dc5391b07ed h1:O08p0egfekFqQSnc4sfEJUTI5dGiEyiDRNW/VYa/Ce4=
+git.hlsq.asia/mmorpg/service-common v0.0.0-20260130035320-5dc5391b07ed/go.mod h1:mMhZcumphj6gaVTppVYsMTkd+5HupmQgAc53Pd4MH9I=
 github.com/BurntSushi/toml v1.2.0 h1:Rt8g24XnyGTyglgET/PRUNlrUeu9F5L+7FilkXfZgs0=
 github.com/BurntSushi/toml v1.2.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/IBM/sarama v1.46.3 h1:njRsX6jNlnR+ClJ8XmkO+CM4unbrNr/2vB5KK6UA+IE=
diff --git a/internal/dao/model/users.gen.go b/internal/dao/model/users.gen.go
index e5905db..1d333cb 100644
--- a/internal/dao/model/users.gen.go
+++ b/internal/dao/model/users.gen.go
@@ -16,7 +16,7 @@ const TableNameUser = "users"
 // User mapped from table <users>
 type User struct {
 	ID           uint64         `gorm:"column:id;primaryKey;autoIncrement:true" json:"id"`
-	Sn           string         `gorm:"column:sn;not null;comment:业务唯一编号" json:"sn"` // 业务唯一编号
+	Sn           int64          `gorm:"column:sn;not null;comment:业务唯一编号" json:"sn"` // 业务唯一编号
 	Name         string         `gorm:"column:name;not null" json:"name"`
 	Phone        string         `gorm:"column:phone" json:"phone"`
 	WxUnionID    string         `gorm:"column:wx_union_id;comment:微信用户唯一标识" json:"wx_union_id"`             // 微信用户唯一标识
@@ -33,8 +33,8 @@ func (*User) TableName() string {
 
 // Auto sn
 func (m *User) BeforeCreate(_ *gorm.DB) error {
-	if m.Sn == "" {
-		m.Sn = utils.SnowflakeInstance().Generate().String()
+	if m.Sn == 0 {
+		m.Sn = utils.SnowflakeInstance().Generate().Int64()
 	}
 	return nil
 }
diff --git a/internal/dao/query/users.gen.go b/internal/dao/query/users.gen.go
index f047106..1dfdb10 100644
--- a/internal/dao/query/users.gen.go
+++ b/internal/dao/query/users.gen.go
@@ -28,7 +28,7 @@ func newUser(db *gorm.DB, opts ...gen.DOOption) user {
 	tableName := _user.userDo.TableName()
 	_user.ALL = field.NewAsterisk(tableName)
 	_user.ID = field.NewUint64(tableName, "id")
-	_user.Sn = field.NewString(tableName, "sn")
+	_user.Sn = field.NewInt64(tableName, "sn")
 	_user.Name = field.NewString(tableName, "name")
 	_user.Phone = field.NewString(tableName, "phone")
 	_user.WxUnionID = field.NewString(tableName, "wx_union_id")
@@ -47,7 +47,7 @@ type user struct {
 
 	ALL          field.Asterisk
 	ID           field.Uint64
-	Sn           field.String // 业务唯一编号
+	Sn           field.Int64 // 业务唯一编号
 	Name         field.String
 	Phone        field.String
 	WxUnionID    field.String // 微信用户唯一标识
@@ -72,7 +72,7 @@ func (u user) As(alias string) *user {
 func (u *user) updateTableName(table string) *user {
 	u.ALL = field.NewAsterisk(table)
 	u.ID = field.NewUint64(table, "id")
-	u.Sn = field.NewString(table, "sn")
+	u.Sn = field.NewInt64(table, "sn")
 	u.Name = field.NewString(table, "name")
 	u.Phone = field.NewString(table, "phone")
 	u.WxUnionID = field.NewString(table, "wx_union_id")
diff --git a/internal/dao/repository/define.go b/internal/dao/repository/define.go
index f8ddd3e..c1f11cf 100644
--- a/internal/dao/repository/define.go
+++ b/internal/dao/repository/define.go
@@ -17,7 +17,7 @@ func Query() *query.Query {
 	return query.Use(mysql.GetDB(dbName))
 }
 
-func keyCacheBySn(sn string, tableName string) string {
+func keyCacheBySn(sn int64, tableName string) string {
 	return fmt.Sprintf(cacheBySn, tableName, sn)
 }
 
diff --git a/internal/dao/repository/users.go b/internal/dao/repository/users.go
index e0c002e..bff183a 100644
--- a/internal/dao/repository/users.go
+++ b/internal/dao/repository/users.go
@@ -44,7 +44,7 @@ func (d *UserDao) Updates(user *model.User) error {
 	return info.Error
 }
 
-func (d *UserDao) FindBySn(sn string) (*model.User, error) {
+func (d *UserDao) FindBySn(sn int64) (*model.User, error) {
 	if d.cache != nil {
 		var user model.User
 		if ok := d.cache.Get(d.ctx, keyCacheBySn(sn, user.TableName()), &user); ok {