diff --git a/backend/baseService/internal/applications/interface/accountserviceiface/interface.go b/backend/baseService/internal/applications/interface/accountserviceiface/interface.go
index 01d127e..4fc0a57 100644
--- a/backend/baseService/internal/applications/interface/accountserviceiface/interface.go
+++ b/backend/baseService/internal/applications/interface/accountserviceiface/interface.go
@@ -2,6 +2,7 @@ package accountserviceiface
 
 import (
 	"context"
+	"github.com/cloudzenith/DouTok/backend/baseService/api"
 	"github.com/cloudzenith/DouTok/backend/baseService/internal/domain/service/accountservice"
 )
 
@@ -12,6 +13,7 @@ type AccountService interface {
 	CheckPasswordByMobile(ctx context.Context, mobile, password string) (int64, error)
 	CheckPasswordByEmail(ctx context.Context, email, password string) (int64, error)
 	ModifyPassword(ctx context.Context, id int64, oldPassword, newPassword string) error
+	Unbind(ctx context.Context, id int64, voucherType api.VoucherType) error
 }
 
 var _ AccountService = (*accountservice.Service)(nil)
diff --git a/backend/baseService/internal/domain/repoiface/account.go b/backend/baseService/internal/domain/repoiface/account.go
index 2ed37b7..6b234c8 100644
--- a/backend/baseService/internal/domain/repoiface/account.go
+++ b/backend/baseService/internal/domain/repoiface/account.go
@@ -3,6 +3,7 @@ package repoiface
 import (
 	"context"
 	"github.com/cloudzenith/DouTok/backend/baseService/internal/infrastructure/dal/models"
+	"gorm.io/gen/field"
 )
 
 //go:generate mockgen -source=account.go -destination=account_mock.go -package=repoiface AccountRepository
@@ -14,4 +15,5 @@ type AccountRepository interface {
 	GetByEmail(ctx context.Context, email string) (*models.Account, error)
 	IsMobileExist(ctx context.Context, mobile string) (bool, error)
 	IsEmailExist(ctx context.Context, email string) (bool, error)
+	ClearColumn(ctx context.Context, column field.Expr) error
 }
diff --git a/backend/baseService/internal/domain/service/accountservice/service.go b/backend/baseService/internal/domain/service/accountservice/service.go
index 52af43c..699f0bc 100644
--- a/backend/baseService/internal/domain/service/accountservice/service.go
+++ b/backend/baseService/internal/domain/service/accountservice/service.go
@@ -3,9 +3,13 @@ package accountservice
 import (
 	"context"
 	"errors"
+	"github.com/TremblingV5/box/dbtx"
+	"github.com/cloudzenith/DouTok/backend/baseService/api"
 	"github.com/cloudzenith/DouTok/backend/baseService/internal/domain/entity/account"
 	"github.com/cloudzenith/DouTok/backend/baseService/internal/domain/repoiface"
 	"github.com/cloudzenith/DouTok/backend/baseService/internal/infrastructure/dal/models"
+	"github.com/cloudzenith/DouTok/backend/baseService/internal/infrastructure/dal/query"
+	"gorm.io/gen/field"
 )
 
 type Service struct {
@@ -139,3 +143,26 @@ func (s *Service) ModifyPassword(ctx context.Context, id int64, oldPassword, new
 
 	return nil
 }
+
+func (s *Service) Unbind(ctx context.Context, id int64, voucherType api.VoucherType) (err error) {
+	ctx, persist := dbtx.WithTXPersist(ctx)
+	defer func() {
+		persist(err)
+	}()
+
+	if id == 0 {
+		return errors.New("账户id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:
+		column = query.Q.Account.Mobile
+	default:
+		return errors.New("不支持的类型")
+	}
+
+	return s.account.ClearColumn(ctx, column)
+}
diff --git a/backend/baseService/internal/infrastructure/repositories/accountrepo/repository.go b/backend/baseService/internal/infrastructure/repositories/accountrepo/repository.go
index 20a153a..27e890d 100644
--- a/backend/baseService/internal/infrastructure/repositories/accountrepo/repository.go
+++ b/backend/baseService/internal/infrastructure/repositories/accountrepo/repository.go
@@ -2,8 +2,10 @@ package accountrepo
 
 import (
 	"context"
+	"github.com/TremblingV5/box/dbtx"
 	"github.com/cloudzenith/DouTok/backend/baseService/internal/infrastructure/dal/query"
 	"gorm.io/gen"
+	"gorm.io/gen/field"
 
 	"github.com/cloudzenith/DouTok/backend/baseService/internal/infrastructure/dal/models"
 )
@@ -70,3 +72,10 @@ func (r *PersistRepository) IsMobileExist(ctx context.Context, mobile string) (b
 func (r *PersistRepository) IsEmailExist(ctx context.Context, email string) (bool, error) {
 	return r.isExist(ctx, query.Q.Account.Email.Eq(email))
 }
+
+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)
+		return err
+	})
+}