diff --git a/backend/baseService/go.mod b/backend/baseService/go.mod
index 579e92c..4989db3 100644
--- a/backend/baseService/go.mod
+++ b/backend/baseService/go.mod
@@ -4,6 +4,7 @@ go 1.22.2
 
 require (
 	buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go v1.34.2-20240508200655-46a4cf4ba109.2
+	github.com/TremblingV5/box v0.0.7
 	github.com/bufbuild/protovalidate-go v0.6.3
 	github.com/bwmarrin/snowflake v0.3.0
 	github.com/bytedance/sonic v1.12.3
@@ -29,7 +30,6 @@ require (
 
 require (
 	dario.cat/mergo v1.0.0 // indirect
-	github.com/TremblingV5/box v0.0.7 // indirect
 	github.com/antlr4-go/antlr/v4 v4.13.0 // indirect
 	github.com/apache/rocketmq-client-go/v2 v2.1.2 // indirect
 	github.com/armon/go-metrics v0.4.1 // indirect
diff --git a/backend/baseService/internal/domain/service/accountservice/service.go b/backend/baseService/internal/domain/service/accountservice/service.go
index cf0e7f4..ffe92fe 100644
--- a/backend/baseService/internal/domain/service/accountservice/service.go
+++ b/backend/baseService/internal/domain/service/accountservice/service.go
@@ -49,6 +49,10 @@ func (s *Service) checkAccountUnique(ctx context.Context, account *account.Accou
 }
 
 func (s *Service) Create(ctx context.Context, mobile, email, password string) (int64, error) {
+	if mobile == "" && email == "" {
+		return 0, errors.New("mobile or email is required")
+	}
+
 	account := account.NewAccount(
 		account.WithMobile(mobile),
 		account.WithEmail(email),
@@ -177,12 +181,30 @@ func (s *Service) Bind(ctx context.Context, id int64, voucherType api.VoucherTyp
 		return errors.New("账户id不能为空")
 	}
 
+	if voucher == "" {
+		return errors.New("绑定值不能为空")
+	}
+
 	var column field.Expr
 	switch voucherType {
-	case api.VoucherType_VOUCHER_EMAIL:
-		column = query.Q.Account.Email
 	case api.VoucherType_VOUCHER_PHONE:
+		exist, err := s.account.IsMobileExist(ctx, voucher)
+		if err != nil {
+			return err
+		}
+		if exist {
+			return errors.New("该手机号已被其他账户绑定")
+		}
 		column = query.Q.Account.Mobile
+	case api.VoucherType_VOUCHER_EMAIL:
+		exist, err := s.account.IsEmailExist(ctx, voucher)
+		if err != nil {
+			return err
+		}
+		if exist {
+			return errors.New("该邮箱已被其他账户绑定")
+		}
+		column = query.Q.Account.Email
 	default:
 		return errors.New("不支持的类型")
 	}
diff --git a/backend/baseService/internal/infrastructure/dal/models/account.gen.go b/backend/baseService/internal/infrastructure/dal/models/account.gen.go
index e5f9492..feee63e 100644
--- a/backend/baseService/internal/infrastructure/dal/models/account.gen.go
+++ b/backend/baseService/internal/infrastructure/dal/models/account.gen.go
@@ -8,13 +8,15 @@ const TableNameAccount = "account"
 
 // Account mapped from table <account>
 type Account struct {
-	ID        int64  `gorm:"column:id;type:bigint;primaryKey" json:"id"`
-	Mobile    string `gorm:"column:mobile;type:varchar(20);not null;index:account_mobile_idx,priority:1" json:"mobile"`
-	Email     string `gorm:"column:email;type:varchar(100);not null;index:account_email_idx,priority:1" json:"email"`
-	Password  string `gorm:"column:password;type:varchar(64);not null" json:"password"`
-	Salt      string `gorm:"column:salt;type:varchar(64);not null" json:"salt"`
-	IsDeleted bool   `gorm:"column:is_deleted;type:tinyint(1);not null" json:"is_deleted"`
-	Number    string `gorm:"column:number;type:varchar(15);not null;comment:doutok号" json:"number"` // doutok号
+	ID           int64   `gorm:"column:id;type:bigint;primaryKey" json:"id"`
+	Mobile       string  `gorm:"column:mobile;type:varchar(20);not null;index:account_mobile_idx,priority:1" json:"mobile"`
+	MobileUnique *string `gorm:"column:mobile_unique;type:varchar(20);->;uniqueIndex:uk_account_mobile" json:"-"`
+	Email        string  `gorm:"column:email;type:varchar(100);not null;index:account_email_idx,priority:1" json:"email"`
+	EmailUnique  *string `gorm:"column:email_unique;type:varchar(100);->;uniqueIndex:uk_account_email" json:"-"`
+	Password     string  `gorm:"column:password;type:varchar(64);not null" json:"password"`
+	Salt         string  `gorm:"column:salt;type:varchar(64);not null" json:"salt"`
+	IsDeleted    bool    `gorm:"column:is_deleted;type:tinyint(1);not null" json:"is_deleted"`
+	Number       string  `gorm:"column:number;type:varchar(15);not null;comment:doutok号" json:"number"` // doutok号
 }
 
 // TableName Account's table name
diff --git a/backend/baseService/internal/infrastructure/repositories/accountrepo/repository.go b/backend/baseService/internal/infrastructure/repositories/accountrepo/repository.go
index 67d0263..30e3d46 100644
--- a/backend/baseService/internal/infrastructure/repositories/accountrepo/repository.go
+++ b/backend/baseService/internal/infrastructure/repositories/accountrepo/repository.go
@@ -75,7 +75,7 @@ func (r *PersistRepository) IsEmailExist(ctx context.Context, email string) (boo
 
 func (r *PersistRepository) ClearColumn(ctx context.Context, column field.Expr) error {
 	return dbtx.TxDo(ctx, func(tx *query.QueryTx) error {
-		_, err := tx.WithContext(ctx).Account.Update(column, nil)
+		_, err := tx.WithContext(ctx).Account.Update(column, "")
 		return err
 	})
 }
diff --git a/backend/shortVideoApiService/api/svapi/user.proto b/backend/shortVideoApiService/api/svapi/user.proto
index 6e72e81..b49839c 100644
--- a/backend/shortVideoApiService/api/svapi/user.proto
+++ b/backend/shortVideoApiService/api/svapi/user.proto
@@ -97,7 +97,7 @@ message RegisterRequest {
     string mobile = 1;
     string email = 2;
     string password = 3 [
-        (buf.validate.field).string.min_len = 6,
+        (buf.validate.field).string.min_len = 8,
         (buf.validate.field).string.max_len = 50
     ];
     // @gotags: json:"code_id,omitempty,string"
@@ -111,8 +111,8 @@ message RegisterResponse {
 }
 
 message LoginRequest {
-    string mobile = 1 [(buf.validate.field).string.pattern = "^\\+?[1-9]\\d{1,14}$"];
-    string email = 2 [(buf.validate.field).string.email = true];
+    string mobile = 1;
+    string email = 2;
     string password = 3 [
         (buf.validate.field).string.min_len = 8,
         (buf.validate.field).string.max_len = 50
diff --git a/backend/shortVideoApiService/go.mod b/backend/shortVideoApiService/go.mod
index bbc2e3a..62082ca 100644
--- a/backend/shortVideoApiService/go.mod
+++ b/backend/shortVideoApiService/go.mod
@@ -75,7 +75,6 @@ require (
 	github.com/patrickmn/go-cache v2.1.0+incompatible // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/redis/go-redis/v9 v9.6.1 // indirect
-	github.com/rogpeppe/go-internal v1.13.1 // indirect
 	github.com/rs/xid v1.5.0 // indirect
 	github.com/samber/lo v1.46.0 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
@@ -111,3 +110,5 @@ require (
 )
 
 replace github.com/cloudzenith/DouTok/backend/gopkgs v0.0.9 => github.com/cloudzenith/DouTok/backend/gopkgs v0.0.0-20241103032449-fe0152ac484a
+
+replace github.com/cloudzenith/DouTok/backend/baseService v0.0.1 => ../baseService
diff --git a/backend/shortVideoApiService/internal/applications/userapp/application.go b/backend/shortVideoApiService/internal/applications/userapp/application.go
index d402b44..09d5225 100644
--- a/backend/shortVideoApiService/internal/applications/userapp/application.go
+++ b/backend/shortVideoApiService/internal/applications/userapp/application.go
@@ -3,6 +3,7 @@ package userapp
 import (
 	"context"
 	"fmt"
+	baseapi "github.com/cloudzenith/DouTok/backend/baseService/api"
 	"github.com/cloudzenith/DouTok/backend/shortVideoApiService/api/svapi"
 	"github.com/cloudzenith/DouTok/backend/shortVideoApiService/internal/infrastructure/adapter/baseadapter"
 	"github.com/cloudzenith/DouTok/backend/shortVideoApiService/internal/infrastructure/adapter/baseadapter/accountoptions"
@@ -114,6 +115,16 @@ func (a *Application) setToken2Header(ctx context.Context, claim *claims.Claims)
 }
 
 func (a *Application) Login(ctx context.Context, request *svapi.LoginRequest) (*svapi.LoginResponse, error) {
+	if request.GetMobile() == "" && request.GetEmail() == "" {
+		return nil, errorx.New(1, "mobile or email is required")
+	}
+	if request.GetMobile() != "" && !isValidMobile(request.GetMobile()) {
+		return nil, errorx.New(1, "invalid mobile format")
+	}
+	if request.GetEmail() != "" && !isValidEmail(request.GetEmail()) {
+		return nil, errorx.New(1, "invalid email format")
+	}
+
 	accountId, err := a.base.CheckAccount(
 		ctx,
 		accountoptions.CheckAccountWithMobile(request.GetMobile()),
@@ -130,7 +141,7 @@ func (a *Application) Login(ctx context.Context, request *svapi.LoginRequest) (*
 		return nil, errorx.New(1, "failed to get user info")
 	}
 
-	token, err := a.setToken2Header(ctx, claims.New(user.Id))
+	token, err := a.setToken2Header(ctx, claims.NewWithAccount(user.Id, accountId))
 	if err != nil {
 		log.Context(ctx).Error("failed to generate token: %v", err)
 		return nil, errorx.New(1, "failed to generate token")
@@ -141,6 +152,16 @@ func (a *Application) Login(ctx context.Context, request *svapi.LoginRequest) (*
 }
 
 func (a *Application) Register(ctx context.Context, request *svapi.RegisterRequest) (*svapi.RegisterResponse, error) {
+	if request.Mobile == "" && request.Email == "" {
+		return nil, errorx.New(1, "mobile or email is required")
+	}
+	if request.Mobile != "" && !isValidMobile(request.Mobile) {
+		return nil, errorx.New(1, "invalid mobile format")
+	}
+	if request.Email != "" && !isValidEmail(request.Email) {
+		return nil, errorx.New(1, "invalid email format")
+	}
+
 	if err := a.base.ValidateVerificationCode(ctx, request.CodeId, request.Code); err != nil {
 		return nil, errorx.New(1, "invalid verification code")
 	}
@@ -198,13 +219,59 @@ func (a *Application) UpdateUserInfo(ctx context.Context, request *svapi.UpdateU
 }
 
 func (a *Application) BindUserVoucher(ctx context.Context, request *svapi.BindUserVoucherRequest) (*svapi.BindUserVoucherResponse, error) {
-	//TODO implement me
-	panic("implement me")
+	accountId, err := claims.GetAccountId(ctx)
+	if err != nil {
+		return nil, errorx.New(1, "failed to get account id from token")
+	}
+
+	if request.Voucher == "" {
+		return nil, errorx.New(1, "voucher value is required")
+	}
+
+	var vt baseapi.VoucherType
+	switch request.VoucherType {
+	case svapi.VoucherType_PHONE:
+		if !isValidMobile(request.Voucher) {
+			return nil, errorx.New(1, "invalid mobile format")
+		}
+		vt = baseapi.VoucherType_VOUCHER_PHONE
+	case svapi.VoucherType_EMAIL:
+		if !isValidEmail(request.Voucher) {
+			return nil, errorx.New(1, "invalid email format")
+		}
+		vt = baseapi.VoucherType_VOUCHER_EMAIL
+	default:
+		return nil, errorx.New(1, "unsupported voucher type")
+	}
+
+	if err := a.base.Bind(ctx, accountId, vt, request.Voucher); err != nil {
+		log.Context(ctx).Errorf("failed to bind voucher: %v", err)
+		return nil, errorx.New(1, "failed to bind voucher")
+	}
+	return &svapi.BindUserVoucherResponse{}, nil
 }
 
 func (a *Application) UnbindUserVoucher(ctx context.Context, request *svapi.UnbindUserVoucherRequest) (*svapi.UnbindUserVoucherResponse, error) {
-	//TODO implement me
-	panic("implement me")
+	accountId, err := claims.GetAccountId(ctx)
+	if err != nil {
+		return nil, errorx.New(1, "failed to get account id from token")
+	}
+
+	var vt baseapi.VoucherType
+	switch request.VoucherType {
+	case svapi.VoucherType_PHONE:
+		vt = baseapi.VoucherType_VOUCHER_PHONE
+	case svapi.VoucherType_EMAIL:
+		vt = baseapi.VoucherType_VOUCHER_EMAIL
+	default:
+		return nil, errorx.New(1, "unsupported voucher type")
+	}
+
+	if err := a.base.Unbind(ctx, accountId, vt); err != nil {
+		log.Context(ctx).Errorf("failed to unbind voucher: %v", err)
+		return nil, errorx.New(1, "failed to unbind voucher")
+	}
+	return &svapi.UnbindUserVoucherResponse{}, nil
 }
 
 var _ svapi.UserServiceHTTPServer = (*Application)(nil)
diff --git a/backend/shortVideoApiService/internal/applications/userapp/validation.go b/backend/shortVideoApiService/internal/applications/userapp/validation.go
new file mode 100644
index 0000000..eefdd42
--- /dev/null
+++ b/backend/shortVideoApiService/internal/applications/userapp/validation.go
@@ -0,0 +1,17 @@
+package userapp
+
+import (
+	"net/mail"
+	"regexp"
+)
+
+var mobilePattern = regexp.MustCompile(`^\+?[1-9]\d{1,14}$`)
+
+func isValidMobile(mobile string) bool {
+	return mobilePattern.MatchString(mobile)
+}
+
+func isValidEmail(email string) bool {
+	_, err := mail.ParseAddress(email)
+	return err == nil
+}
diff --git a/backend/shortVideoApiService/internal/infrastructure/adapter/baseadapter/account.go b/backend/shortVideoApiService/internal/infrastructure/adapter/baseadapter/account.go
index fbfc6e3..4340552 100644
--- a/backend/shortVideoApiService/internal/infrastructure/adapter/baseadapter/account.go
+++ b/backend/shortVideoApiService/internal/infrastructure/adapter/baseadapter/account.go
@@ -36,3 +36,20 @@ func (a *Adapter) CheckAccount(ctx context.Context, options ...accountoptions.Ch
 		},
 	)
 }
+
+func (a *Adapter) Bind(ctx context.Context, accountId int64, voucherType api.VoucherType, voucher string) error {
+	resp, err := a.account.Bind(ctx, &api.BindRequest{
+		AccountId:   accountId,
+		VoucherType: voucherType,
+		Voucher:     voucher,
+	})
+	return respcheck.Check[*api.Metadata](resp, err)
+}
+
+func (a *Adapter) Unbind(ctx context.Context, accountId int64, voucherType api.VoucherType) error {
+	resp, err := a.account.Unbind(ctx, &api.UnbindRequest{
+		AccountId:   accountId,
+		VoucherType: voucherType,
+	})
+	return respcheck.Check[*api.Metadata](resp, err)
+}
diff --git a/backend/shortVideoApiService/internal/infrastructure/utils/claims/claims.go b/backend/shortVideoApiService/internal/infrastructure/utils/claims/claims.go
index 55f1cc8..b46c462 100644
--- a/backend/shortVideoApiService/internal/infrastructure/utils/claims/claims.go
+++ b/backend/shortVideoApiService/internal/infrastructure/utils/claims/claims.go
@@ -10,7 +10,8 @@ import (
 
 type Claims struct {
 	jwt5.RegisteredClaims
-	UserId int64 `json:"user_id"`
+	UserId    int64 `json:"user_id"`
+	AccountId int64 `json:"account_id,omitempty"`
 }
 
 func New(userId int64) *Claims {
@@ -19,6 +20,13 @@ func New(userId int64) *Claims {
 	}
 }
 
+func NewWithAccount(userId, accountId int64) *Claims {
+	return &Claims{
+		UserId:    userId,
+		AccountId: accountId,
+	}
+}
+
 func GetUserId(ctx context.Context) (int64, error) {
 	anyClaims, ok := jwt.FromContext(ctx)
 	if !ok {
@@ -33,6 +41,24 @@ func GetUserId(ctx context.Context) (int64, error) {
 	return claims.UserId, nil
 }
 
+func GetAccountId(ctx context.Context) (int64, error) {
+	anyClaims, ok := jwt.FromContext(ctx)
+	if !ok {
+		return 0, errors.New("no claims in context")
+	}
+
+	claims, ok := anyClaims.(*Claims)
+	if !ok {
+		return 0, errors.New("claims type error")
+	}
+
+	if claims.AccountId == 0 {
+		return 0, errors.New("account_id not found in token, please re-login")
+	}
+
+	return claims.AccountId, nil
+}
+
 func GenerateToken(claim *Claims) (string, error) {
 	token := jwt5.NewWithClaims(jwt5.SigningMethodHS256, claim)
 	tokenString, err := token.SignedString([]byte("token"))
diff --git a/sql/20260527000001_v0_3_0_auth_upgrade.sql b/sql/20260527000001_v0_3_0_auth_upgrade.sql
new file mode 100644
index 0000000..b88721e
--- /dev/null
+++ b/sql/20260527000001_v0_3_0_auth_upgrade.sql
@@ -0,0 +1,41 @@
+-- +goose Up
+
+-- ============================================================
+-- v0.3.0 Auth Upgrade: 支持仅手机号 / 仅邮箱 / 混合注册
+-- ============================================================
+--
+-- 迁移前请先执行以下检查 SQL，确认无重复数据：
+--
+--   SELECT mobile, COUNT(*) AS cnt
+--     FROM account
+--    WHERE mobile != '' AND is_deleted = 0
+--    GROUP BY mobile HAVING cnt > 1;
+--
+--   SELECT email, COUNT(*) AS cnt
+--     FROM account
+--    WHERE email != '' AND is_deleted = 0
+--    GROUP BY email HAVING cnt > 1;
+--
+-- 如有重复行，请先手动处理后再执行迁移。
+-- ============================================================
+
+-- 使用 GENERATED COLUMN + UNIQUE INDEX 实现条件唯一约束：
+--   mobile/email 为空串时 → 生成列值为 NULL → UNIQUE 允许多个 NULL
+--   mobile/email 非空时 → 生成列保留原值 → UNIQUE 约束生效
+
+-- +goose StatementBegin
+ALTER TABLE account
+    ADD COLUMN `mobile_unique` VARCHAR(20) GENERATED ALWAYS AS (NULLIF(mobile, '')) STORED AFTER `mobile`,
+    ADD COLUMN `email_unique` VARCHAR(100) GENERATED ALWAYS AS (NULLIF(email, '')) STORED AFTER `email`,
+    ADD UNIQUE INDEX `uk_account_mobile` (`mobile_unique`),
+    ADD UNIQUE INDEX `uk_account_email` (`email_unique`);
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+ALTER TABLE account
+    DROP INDEX `uk_account_email`,
+    DROP INDEX `uk_account_mobile`,
+    DROP COLUMN `email_unique`,
+    DROP COLUMN `mobile_unique`;
+-- +goose StatementEnd