diff --git a/dashboard/app/(dashboard)/roles/_components/create.tsx b/dashboard/app/(dashboard)/roles/_components/create.tsx
index 4f9a333..be580cb 100644
--- a/dashboard/app/(dashboard)/roles/_components/create.tsx
+++ b/dashboard/app/(dashboard)/roles/_components/create.tsx
@@ -26,7 +26,6 @@ import { Textarea } from "@/components/ui/textarea"
 type CreateRoleDrawerProps = {
   open: boolean
   saving: boolean
-  defaultSortNo: number
   onOpenChange: (open: boolean) => void
   onSubmit: (payload: CreateAdminRolePayload) => Promise<void>
 }
@@ -38,11 +37,6 @@ const createFormSchema = z.object({
     .trim()
     .min(1, "角色编码不能为空")
     .regex(/^[A-Za-z][A-Za-z0-9:_-]*$/, "角色编码需以字母开头，仅支持字母、数字、冒号、下划线和短横线"),
-  sortNo: z
-    .string()
-    .trim()
-    .min(1, "排序不能为空")
-    .regex(/^\d+$/, "排序值必须是大于等于 0 的整数"),
   remark: z.string().trim(),
 })
 
@@ -54,12 +48,15 @@ const createFormResolver = zodResolver(createFormSchema as never) as Resolver<
   z.output<typeof createFormSchema>
 >
 
-function buildEmptyForm(defaultSortNo: number): CreateForm {
+const emptyForm: CreateForm = {
+  name: "",
+  code: "",
+  remark: "",
+}
+
+function buildEmptyForm(): CreateForm {
   return {
-    name: "",
-    code: "",
-    sortNo: String(defaultSortNo),
-    remark: "",
+    ...emptyForm,
   }
 }
 
@@ -67,7 +64,6 @@ function buildPayload(form: CreateForm): CreateAdminRolePayload {
   return {
     name: form.name.trim(),
     code: form.code.trim(),
-    sortNo: Number(form.sortNo),
     remark: form.remark.trim(),
   }
 }
@@ -75,7 +71,6 @@ function buildPayload(form: CreateForm): CreateAdminRolePayload {
 export function CreateRoleDrawer({
   open,
   saving,
-  defaultSortNo,
   onOpenChange,
   onSubmit,
 }: CreateRoleDrawerProps) {
@@ -83,9 +78,8 @@ export function CreateRoleDrawer({
     <Drawer open={open} onOpenChange={onOpenChange} direction="right">
       {open ? (
         <CreateRoleDrawerBody
-          key={`create-role-${defaultSortNo}`}
+          key="create-role"
           saving={saving}
-          defaultSortNo={defaultSortNo}
           onOpenChange={onOpenChange}
           onSubmit={onSubmit}
         />
@@ -96,14 +90,12 @@ export function CreateRoleDrawer({
 
 type CreateRoleDrawerBodyProps = {
   saving: boolean
-  defaultSortNo: number
   onOpenChange: (open: boolean) => void
   onSubmit: (payload: CreateAdminRolePayload) => Promise<void>
 }
 
 function CreateRoleDrawerBody({
   saving,
-  defaultSortNo,
   onOpenChange,
   onSubmit,
 }: CreateRoleDrawerBodyProps) {
@@ -113,7 +105,7 @@ function CreateRoleDrawerBody({
     z.output<typeof createFormSchema>
   >({
     resolver: createFormResolver,
-    defaultValues: buildEmptyForm(defaultSortNo),
+    defaultValues: buildEmptyForm(),
   })
   const {
     handleSubmit,
@@ -124,7 +116,7 @@ function CreateRoleDrawerBody({
 
   async function onFormSubmit(values: CreateForm) {
     await onSubmit(buildPayload(values))
-    reset(buildEmptyForm(defaultSortNo))
+    reset(buildEmptyForm())
   }
 
   return (
@@ -164,18 +156,6 @@ function CreateRoleDrawerBody({
               <FieldError errors={[errors.code]} />
             </FieldContent>
           </Field>
-          <Field data-invalid={!!errors.sortNo}>
-            <FieldLabel htmlFor="create-role-sort-no">排序</FieldLabel>
-            <FieldContent>
-              <Input
-                id="create-role-sort-no"
-                inputMode="numeric"
-                aria-invalid={!!errors.sortNo}
-                {...register("sortNo")}
-              />
-              <FieldError errors={[errors.sortNo]} />
-            </FieldContent>
-          </Field>
           <Field data-invalid={!!errors.remark}>
             <FieldLabel htmlFor="create-role-remark">备注</FieldLabel>
             <FieldContent>
diff --git a/dashboard/app/(dashboard)/roles/page.tsx b/dashboard/app/(dashboard)/roles/page.tsx
index 5642007..a4b983c 100644
--- a/dashboard/app/(dashboard)/roles/page.tsx
+++ b/dashboard/app/(dashboard)/roles/page.tsx
@@ -310,9 +310,6 @@ export default function DashboardRolesPage() {
     void loadRoles()
   }, [])
 
-  const defaultSortNo =
-    result.results.reduce((max, item) => Math.max(max, item.sortNo), -1) + 1
-
   return (
     <div className="flex flex-1 flex-col gap-6 p-4 lg:p-6">
       <div className="flex flex-col gap-2 sm:flex-row sm:items-center sm:justify-end">
@@ -398,7 +395,6 @@ export default function DashboardRolesPage() {
       <CreateRoleDrawer
         open={creatingOpen}
         saving={savingCreate}
-        defaultSortNo={defaultSortNo}
         onOpenChange={handleCreateDrawerOpenChange}
         onSubmit={handleCreateRole}
       />
diff --git a/dashboard/lib/api/admin.ts b/dashboard/lib/api/admin.ts
index e267087..68de308 100644
--- a/dashboard/lib/api/admin.ts
+++ b/dashboard/lib/api/admin.ts
@@ -75,7 +75,6 @@ export type AdminRole = {
 export type CreateAdminRolePayload = {
   name: string
   code: string
-  sortNo: number
   remark: string
 }
 
diff --git a/internal/pkg/dto/request/admin_request.go b/internal/pkg/dto/request/admin_request.go
index b7b4bb8..32aba5e 100644
--- a/internal/pkg/dto/request/admin_request.go
+++ b/internal/pkg/dto/request/admin_request.go
@@ -50,7 +50,6 @@ type AssignRoleRequest struct {
 type CreateRoleRequest struct {
 	Name   string `json:"name"`
 	Code   string `json:"code"`
-	SortNo int    `json:"sortNo"`
 	Remark string `json:"remark"`
 }
 
diff --git a/internal/services/role_service.go b/internal/services/role_service.go
index 14a954e..d9f6d2d 100644
--- a/internal/services/role_service.go
+++ b/internal/services/role_service.go
@@ -88,7 +88,7 @@ func (s *roleService) CreateRole(req request.CreateRoleRequest, operator *dto.Au
 		Code:        code,
 		Status:      enums.StatusOk,
 		IsSystem:    false,
-		SortNo:      req.SortNo,
+		SortNo:      s.NextSortNo(),
 		Remark:      strings.TrimSpace(req.Remark),
 		AuditFields: utils.BuildAuditFields(operator),
 	}
@@ -115,7 +115,7 @@ func (s *roleService) UpdateRole(req request.UpdateRoleRequest, operator *dto.Au
 }
 
 func (s *roleService) NextSortNo() int {
-	if latest := s.FindOne(sqls.NewCnd().Asc("sort_no").Desc("id")); latest != nil {
+	if latest := s.FindOne(sqls.NewCnd().Desc("sort_no").Desc("id")); latest != nil {
 		return latest.SortNo + 1
 	}
 	return 0