diff --git a/packages/ui/certd-client/src/locales/langs/en-US/certd.ts b/packages/ui/certd-client/src/locales/langs/en-US/certd.ts
index 3edf746d..d8805cff 100644
--- a/packages/ui/certd-client/src/locales/langs/en-US/certd.ts
+++ b/packages/ui/certd-client/src/locales/langs/en-US/certd.ts
@@ -447,6 +447,7 @@ export default {
   description: "Description",
   createTime: "Creation Time",
   updateTime: "Update Time",
+  mainDomain: "Main Domain",
   edit: "Edit",
   groupName: "Group Name",
   enterGroupName: "Please enter group name",
diff --git a/packages/ui/certd-client/src/locales/langs/zh-CN/certd.ts b/packages/ui/certd-client/src/locales/langs/zh-CN/certd.ts
index 45a4384e..f55c7a56 100644
--- a/packages/ui/certd-client/src/locales/langs/zh-CN/certd.ts
+++ b/packages/ui/certd-client/src/locales/langs/zh-CN/certd.ts
@@ -453,6 +453,7 @@ export default {
   description: "说明",
   createTime: "创建时间",
   updateTime: "更新时间",
+  mainDomain: "主域名",
   edit: "编辑",
   groupName: "分组名称",
   enterGroupName: "请输入分组名称",
diff --git a/packages/ui/certd-client/src/views/certd/cname/record/crud.tsx b/packages/ui/certd-client/src/views/certd/cname/record/crud.tsx
index c6865fd1..69b033df 100644
--- a/packages/ui/certd-client/src/views/certd/cname/record/crud.tsx
+++ b/packages/ui/certd-client/src/views/certd/cname/record/crud.tsx
@@ -189,7 +189,7 @@ export default function ({ crudExpose, context }: CreateCrudOptionsProps): Creat
           },
           column: {
             width: 120,
-            align: "center",
+            align: "left",
             cellRender({ value, row }) {
               async function resetStatus() {
                 Modal.confirm({
@@ -202,7 +202,7 @@ export default function ({ crudExpose, context }: CreateCrudOptionsProps): Creat
                 });
               }
               return (
-                <div class={"flex flex-center"}>
+                <div class={"flex flex-left"}>
                   <fs-values-format modelValue={value} dict={dictRef}></fs-values-format>
                   {row.error && (
                     <a-tooltip title={row.error}>
@@ -268,8 +268,15 @@ export default function ({ crudExpose, context }: CreateCrudOptionsProps): Creat
             },
           },
         },
+        mainDomain: {
+          title: t("certd.mainDomain"),
+          type: "text",
+          form: {
+            show: false,
+          },
+        },
         createTime: {
-          title: t("certd.create_time"),
+          title: t("certd.createTime"),
           type: "datetime",
           form: {
             show: false,
@@ -281,7 +288,7 @@ export default function ({ crudExpose, context }: CreateCrudOptionsProps): Creat
           },
         },
         updateTime: {
-          title: t("certd.update_time"),
+          title: t("certd.updateTime"),
           type: "datetime",
           form: {
             show: false,
diff --git a/packages/ui/certd-server/src/modules/cname/service/cname-record-service.ts b/packages/ui/certd-server/src/modules/cname/service/cname-record-service.ts
index c4dca4b3..e5354304 100644
--- a/packages/ui/certd-server/src/modules/cname/service/cname-record-service.ts
+++ b/packages/ui/certd-server/src/modules/cname/service/cname-record-service.ts
@@ -247,6 +247,8 @@ export class CnameRecordService extends BaseService<CnameRecordEntity> {
       return true;
     }
 
+    await this.getByDomain(bean.domain, bean.userId);
+
     const subDomainGetter = new SubDomainsGetter(bean.userId, this.subDomainService);
     const domainParser = new DomainParser(subDomainGetter);