diff --git a/frontend/src/views/components/UserManagement/UserManagement.css b/frontend/src/views/components/UserManagement/UserManagement.css
index a94e443..ea99906 100644
--- a/frontend/src/views/components/UserManagement/UserManagement.css
+++ b/frontend/src/views/components/UserManagement/UserManagement.css
@@ -3,19 +3,18 @@
 }
 
 .settings-header {
-  margin-bottom: 24px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  flex-wrap: wrap;
+  gap: 12px;
+  margin-bottom: 16px;
 }
 
 .settings-header h3 {
   font-size: 18px;
   font-weight: 600;
   color: var(--pm-text-primary);
-  margin: 0 0 8px 0;
-}
-
-.settings-desc {
-  font-size: 14px;
-  color: var(--pm-text-secondary);
   margin: 0;
 }
 
@@ -175,7 +174,6 @@
   display: flex;
   flex-wrap: wrap;
   gap: 8px;
-  margin-top: 14px;
 }
 
 .account-group-panel {
@@ -226,12 +224,6 @@
   background: var(--pm-bg-secondary);
 }
 
-.membership-options-title {
-  padding: 0 6px;
-  color: var(--pm-text-secondary);
-  font-size: 12px;
-}
-
 .membership-option {
   display: flex;
   align-items: center;
@@ -313,11 +305,3 @@
   flex: 0 0 auto;
   margin: 0;
 }
-
-.membership-hint {
-  width: 100%;
-  margin: 8px 0 0;
-  color: var(--pm-text-secondary);
-  font-size: 12px;
-  line-height: 1.6;
-}
diff --git a/frontend/src/views/components/UserManagement/UserManagement.vue b/frontend/src/views/components/UserManagement/UserManagement.vue
index 96d7f37..3ddd3cd 100644
--- a/frontend/src/views/components/UserManagement/UserManagement.vue
+++ b/frontend/src/views/components/UserManagement/UserManagement.vue
@@ -2,8 +2,6 @@
   <div class="settings-card">
     <div class="settings-header">
       <h3>{{ lang.account_management }}</h3>
-      <p class="settings-desc">{{ lang.account_management_desc }}</p>
-      <p class="settings-desc">仅显示权限范围内的成员。新账号默认归入默认分组；分组及成员归属由超级管理员维护。</p>
       <div class="group-toolbar">
         <el-button v-if="canCreateUser" type="primary" :disabled="groupsLoading" @click="createUser">
           <el-icon><Plus /></el-icon> 新建账号
@@ -123,10 +121,11 @@
       <p>账号：{{ membershipUser?.Account }}</p>
       <el-form label-position="top">
         <el-form-item label="所属分组">
-          <fieldset class="membership-options" :disabled="groupSaving">
-            <legend class="membership-options-title">
-              {{ membershipLimit > 1 ? '管理员可勾选多个分组' : '请选择一个分组' }}
-            </legend>
+          <fieldset
+            class="membership-options"
+            :aria-label="membershipLimit > 1 ? '所属分组（可多选）' : '所属分组（单选）'"
+            :disabled="groupSaving"
+          >
             <label
               v-for="group in accountGroups"
               :key="group.id"
@@ -151,11 +150,7 @@
           </fieldset>
         </el-form-item>
       </el-form>
-      <p class="settings-desc">管理员可以多选；普通用户只能选择一个分组。</p>
-      <p v-if="membershipDraft" class="settings-desc">
-        此处仅应用到编辑草稿，点击编辑用户的“确认”后，权限级别和分组才会一起保存。
-      </p>
-      <el-alert title="修改归属会使该账号的旧登录会话和通知发信凭据失效，需要重新登录并配置通知凭据。" type="warning" :closable="false" />
+      <el-alert title="变更分组后需重新登录并重建通知发信凭据。" type="warning" :closable="false" />
       <template #footer>
         <el-button :disabled="groupSaving" @click="membershipVisible = false">取消</el-button>
         <el-button type="primary" :loading="groupSaving" @click="saveMembership">
@@ -240,12 +235,6 @@
                 分组管理
               </el-button>
             </div>
-            <p v-if="canManageGroups" class="membership-hint">
-              分组选择跟随当前权限级别，点击“确认”后与其他修改一起保存；取消则不保存。
-            </p>
-            <p v-else class="membership-hint">
-              仅显示你有权查看的分组，成员归属由超级管理员维护。
-            </p>
           </el-form-item>
 
           <div v-if="editModel === 'edit'" class="security-edit-grid">