diff --git a/src/service/api/auth.ts b/src/service/api/auth.ts
index 21a47a2..0abeb83 100644
--- a/src/service/api/auth.ts
+++ b/src/service/api/auth.ts
@@ -1,7 +1,7 @@
 import { SYSTEM_SERVICE_PREFIX } from '@/constants/service';
 import { request } from '../request';
 import { clearUserRouteCache } from './route';
-import type { ServiceRequestResult } from './shared';
+import { type ServiceRequestResult, mapServiceResult, normalizeStringId } from './shared';
 
 /** 后端登录返回 */
 interface BackendLoginToken {
@@ -38,6 +38,14 @@ interface BackendMyProfileDetailDTO {
   position?: Api.SystemManage.PostSimple | null;
 }
 
+interface BackendFileDTO {
+  id: string | number;
+  configId: string | number;
+  name?: string | null;
+  path: string;
+  url: string;
+}
+
 let userInfoPromise: Promise<ServiceRequestResult<BackendUserInfoDTO>> | null = null;
 
 /** 将后端 token 结构转换成前端现有结构 */
@@ -187,6 +195,23 @@ export function fetchUpdateMyProfile(data: Api.Auth.UpdateMyProfileParams) {
 }
 
 /** 修改当前登录人密码 */
+export async function fetchUpdateMyAvatar(file: File) {
+  const formData = new FormData();
+  formData.append('file', file);
+
+  const result = await request<BackendFileDTO>({
+    url: `${SYSTEM_SERVICE_PREFIX}/user/profile/update-avatar`,
+    method: 'put',
+    data: formData
+  });
+
+  return mapServiceResult(result as ServiceRequestResult<BackendFileDTO>, data => ({
+    ...data,
+    id: normalizeStringId(data.id),
+    configId: normalizeStringId(data.configId)
+  }));
+}
+
 export function fetchUpdateMyPassword(data: Api.Auth.UpdateMyPasswordParams) {
   return request<boolean>({
     url: `${SYSTEM_SERVICE_PREFIX}/user/profile/update-password`,
diff --git a/src/views/personal-center/my-profile/index.vue b/src/views/personal-center/my-profile/index.vue
index a3aeb8e..c017a7d 100644
--- a/src/views/personal-center/my-profile/index.vue
+++ b/src/views/personal-center/my-profile/index.vue
@@ -1,14 +1,13 @@
 <script setup lang="ts">
 import { computed, onActivated, onMounted, ref } from 'vue';
 import { userGenderRecord } from '@/constants/business';
-import { fetchGetMyProfileDetail, fetchUpdateMyProfile } from '@/service/api';
-import { buildFileProxyUrl, uploadFile } from '@/service/api/file';
+import { fetchGetMyProfileDetail, fetchUpdateMyAvatar } from '@/service/api';
 import { useAuthStore } from '@/store/modules/auth';
 import { useAppStore } from '@/store/modules/app';
 import { $t } from '@/locales';
 import ProfileInfoDialog from './modules/profile-info-dialog.vue';
 import ProfilePasswordDialog from './modules/profile-password-dialog.vue';
-import { buildProfileUpdatePayload, formatProfileDateTime, resolveProfileRoleLabels } from './modules/profile-model';
+import { formatProfileDateTime, resolveProfileRoleLabels } from './modules/profile-model';
 
 defineOptions({ name: 'MyProfile' });
 
@@ -22,6 +21,8 @@ const profileInfoVisible = ref(false);
 const passwordVisible = ref(false);
 const avatarInputRef = ref<HTMLInputElement | null>(null);
 
+const MAX_AVATAR_SIZE = 5 * 1024 * 1024;
+
 const descriptionColumns = computed(() => (appStore.isMobile ? 1 : 2));
 const displayName = computed(() => profile.value?.nickname?.trim() || profile.value?.username || '--');
 const displayUsername = computed(() => profile.value?.username?.trim() || '--');
@@ -41,6 +42,7 @@ const genderText = computed(() => {
 
   return $t(userGenderRecord[value]);
 });
+
 const roleLabels = computed(() => {
   const roles = profile.value?.roles ?? [];
 
@@ -57,16 +59,6 @@ function getAvatarText() {
   return name === '--' ? 'CN' : name.slice(0, 1).toUpperCase();
 }
 
-function getEditableProfileValues(current: Api.Auth.MyProfileDetail): Api.Auth.UpdateMyProfileParams {
-  return {
-    nickname: current.nickname ?? '',
-    email: current.email ?? '',
-    mobile: current.mobile ?? '',
-    sex: current.sex ?? 1,
-    avatar: current.avatar ?? ''
-  };
-}
-
 async function loadProfile() {
   const userId = authStore.userInfo.userId;
 
@@ -75,9 +67,7 @@ async function loadProfile() {
     return;
   }
 
-  const { data, error } = await fetchGetMyProfileDetail({
-    userId
-  });
+  const { data, error } = await fetchGetMyProfileDetail({ userId });
 
   if (!error) {
     profile.value = data;
@@ -115,21 +105,14 @@ async function handleAvatarChange(event: Event) {
     return;
   }
 
-  avatarSubmitting.value = true;
-
-  const uploadResult = await uploadFile(file, 'avatar');
-
-  if (uploadResult.error) {
-    avatarSubmitting.value = false;
+  if (file.size > MAX_AVATAR_SIZE) {
+    window.$message?.error('头像图片大小不能超过 5MB');
     return;
   }
 
-  const avatar = buildFileProxyUrl(uploadResult.data.configId, uploadResult.data.path);
-  const payload = buildProfileUpdatePayload({
-    ...getEditableProfileValues(profile.value),
-    avatar
-  });
-  const updateResult = await fetchUpdateMyProfile(payload);
+  avatarSubmitting.value = true;
+
+  const updateResult = await fetchUpdateMyAvatar(file);
 
   avatarSubmitting.value = false;
 
@@ -212,7 +195,7 @@ onActivated(() => {
 
           <ElDescriptions :column="descriptionColumns" border>
             <ElDescriptionsItem label="用户名">{{ displayUsername }}</ElDescriptionsItem>
-            <ElDescriptionsItem label="昵称">{{ displayName }}</ElDescriptionsItem>
+            <ElDescriptionsItem label="名称">{{ displayName }}</ElDescriptionsItem>
             <ElDescriptionsItem label="手机号">{{ mobileText }}</ElDescriptionsItem>
             <ElDescriptionsItem label="邮箱">{{ emailText }}</ElDescriptionsItem>
             <ElDescriptionsItem label="性别">{{ genderText }}</ElDescriptionsItem>