diff --git a/backend/app/repo/website.go b/backend/app/repo/website.go
index 730c2888a..28c8c7b7d 100644
--- a/backend/app/repo/website.go
+++ b/backend/app/repo/website.go
@@ -17,12 +17,18 @@ func (w WebSiteRepo) WithAppInstallId(appInstallId uint) DBOption {
 	}
 }
 
-func (w WebSiteRepo) WithByDomain(domain string) DBOption {
+func (w WebSiteRepo) WithDomain(domain string) DBOption {
 	return func(db *gorm.DB) *gorm.DB {
 		return db.Where("primary_domain = ?", domain)
 	}
 }
 
+func (w WebSiteRepo) WithAlias(alias string) DBOption {
+	return func(db *gorm.DB) *gorm.DB {
+		return db.Where("alias = ?", alias)
+	}
+}
+
 func (w WebSiteRepo) Page(page, size int, opts ...DBOption) (int64, []model.WebSite, error) {
 	var websites []model.WebSite
 	db := getDb(opts...).Model(&model.WebSite{})
diff --git a/backend/app/service/website.go b/backend/app/service/website.go
index 1beb408cf..131eda91b 100644
--- a/backend/app/service/website.go
+++ b/backend/app/service/website.go
@@ -7,6 +7,7 @@ import (
 	"encoding/json"
 	"encoding/pem"
 	"fmt"
+	"github.com/1Panel-dev/1Panel/backend/buserr"
 	"io"
 	"os"
 	"os/exec"
@@ -59,6 +60,16 @@ func (w WebsiteService) PageWebSite(req dto.WebSiteReq) (int64, []dto.WebSiteDTO
 
 func (w WebsiteService) CreateWebsite(create dto.WebSiteCreate) error {
 
+	if exist, _ := websiteRepo.GetBy(websiteRepo.WithDomain(create.PrimaryDomain)); len(exist) > 0 {
+		return buserr.New(constant.ErrNameIsExist)
+	}
+	if exist, _ := websiteRepo.GetBy(websiteRepo.WithAlias(create.Alias)); len(exist) > 0 {
+		return buserr.New(constant.ErrAliasIsExist)
+	}
+	if exist, _ := websiteDomainRepo.GetBy(websiteDomainRepo.WithDomain(create.PrimaryDomain)); len(exist) > 0 {
+		return buserr.New(constant.ErrDomainIsExist)
+	}
+
 	defaultDate, _ := time.Parse(constant.DateLayout, constant.DefaultDate)
 	website := &model.WebSite{
 		PrimaryDomain:  create.PrimaryDomain,
@@ -167,7 +178,7 @@ func (w WebsiteService) RecoverByUpload(req dto.WebSiteRecoverByFile) error {
 		return errors.New("上传文件与选中网站不匹配，无法恢复")
 	}
 
-	website, err := websiteRepo.GetFirst(websiteRepo.WithByDomain(req.WebsiteName))
+	website, err := websiteRepo.GetFirst(websiteRepo.WithDomain(req.WebsiteName))
 	if err != nil {
 		return err
 	}
@@ -179,7 +190,7 @@ func (w WebsiteService) RecoverByUpload(req dto.WebSiteRecoverByFile) error {
 }
 
 func (w WebsiteService) Recover(req dto.WebSiteRecover) error {
-	website, err := websiteRepo.GetFirst(websiteRepo.WithByDomain(req.WebsiteName))
+	website, err := websiteRepo.GetFirst(websiteRepo.WithDomain(req.WebsiteName))
 	if err != nil {
 		return err
 	}
@@ -506,7 +517,7 @@ type WebSiteInfo struct {
 }
 
 func handleWebsiteBackup(backupType, baseDir, backupDir, domain, backupName string) error {
-	website, err := websiteRepo.GetFirst(websiteRepo.WithByDomain(domain))
+	website, err := websiteRepo.GetFirst(websiteRepo.WithDomain(domain))
 	if err != nil {
 		return err
 	}
diff --git a/backend/constant/errs.go b/backend/constant/errs.go
index b1b772d3e..84f0e695e 100644
--- a/backend/constant/errs.go
+++ b/backend/constant/errs.go
@@ -52,3 +52,10 @@ var (
 	ErrFileCanNotRead = "ErrFileCanNotRead"
 	ErrFileToLarge    = "ErrFileToLarge"
 )
+
+//website
+
+var (
+	ErrDomainIsExist = "ErrDomainIsExist"
+	ErrAliasIsExist  = "ErrAliasIsExist"
+)
diff --git a/backend/i18n/lang/en.yaml b/backend/i18n/lang/en.yaml
index 8414e2759..0dbcaf6ee 100644
--- a/backend/i18n/lang/en.yaml
+++ b/backend/i18n/lang/en.yaml
@@ -26,4 +26,8 @@ ErrAppRequired: "{{ .detail }} app is required"
 
 #file
 ErrFileCanNotRead: "File can not read"
-ErrFileToLarge: "file is too large"
\ No newline at end of file
+ErrFileToLarge: "file is too large"
+
+#website
+ErrDomainIsExist: "Domain is already exist"
+ErrAliasIsExist: "Alias is already exist"
\ No newline at end of file
diff --git a/backend/i18n/lang/zh.yaml b/backend/i18n/lang/zh.yaml
index 8c19dca02..b35fc806a 100644
--- a/backend/i18n/lang/zh.yaml
+++ b/backend/i18n/lang/zh.yaml
@@ -26,4 +26,8 @@ ErrAppRequired: "请先安装 {{ .detail }} 应用"
 
 #file
 ErrFileCanNotRead: "文件不可读"
-ErrFileToLarge: "文件超过10M,无法打开"
\ No newline at end of file
+ErrFileToLarge: "文件超过10M,无法打开"
+
+#website
+ErrDomainIsExist: "域名已存在"
+ErrAliasIsExist: "代号已存在"
\ No newline at end of file