diff --git a/frontend/src/views/components/UserManagement/AccountGroups.js b/frontend/src/views/components/UserManagement/AccountGroups.js
index 1c4aa65d..ef40dfc6 100644
--- a/frontend/src/views/components/UserManagement/AccountGroups.js
+++ b/frontend/src/views/components/UserManagement/AccountGroups.js
@@ -106,6 +106,7 @@ export function useAccountGroups(globalStatus, onMembershipSaved = () => {}) {
       if (response?.errorNo !== 0) throw new Error(response?.errorMsg || '保存分组失败')
       ElMessage.success('账号分组已保存')
       await refreshGroups()
+      return response.data || null
     } catch (error) {
       if (error !== 'cancel' && error !== 'close' && !isRecentAuthenticationCancelled(error)) ElMessage.error(error?.message || '保存分组失败')
     } finally {
@@ -113,6 +114,19 @@ export function useAccountGroups(globalStatus, onMembershipSaved = () => {}) {
     }
   }
 
+  const createMembershipGroup = async () => {
+    if (!membershipVisible.value || !canManageGroups.value || groupSaving.value) return
+    const group = await saveGroup()
+    if (!group?.id) return
+    if (membershipLimit.value === 1) {
+      membershipSelection.value = [group.id]
+      return
+    }
+    const selectedGroups = membershipSelection.value.filter(id => id !== 0)
+    if (!selectedGroups.includes(group.id)) selectedGroups.push(group.id)
+    membershipSelection.value = selectedGroups
+  }
+
   const editMembership = (user, options = {}) => {
     if (!canManageGroups.value || groupSaving.value) return
     membershipUser.value = { ...user, Role: options.role || user.Role }
@@ -163,6 +177,6 @@ export function useAccountGroups(globalStatus, onMembershipSaved = () => {}) {
     accountGroups, groupsLoading, groupsError, canManageGroups, groupSaving,
     membershipVisible, membershipUser, membershipSelection, membershipLimit,
     membershipDraft, membershipSingleSelection,
-    refreshGroups, loadGroup, toggleGroup, saveGroup, editMembership, saveMembership
+    refreshGroups, loadGroup, toggleGroup, saveGroup, createMembershipGroup, editMembership, saveMembership
   }
 }
diff --git a/frontend/src/views/components/UserManagement/UserManagement.css b/frontend/src/views/components/UserManagement/UserManagement.css
index 904beb41..8ded6c5f 100644
--- a/frontend/src/views/components/UserManagement/UserManagement.css
+++ b/frontend/src/views/components/UserManagement/UserManagement.css
@@ -224,6 +224,21 @@
   background: var(--pm-bg-secondary);
 }
 
+.membership-selector-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+  margin-bottom: 8px;
+  color: var(--pm-text-secondary);
+  font-size: 12px;
+}
+
+.membership-selector-header :deep(.el-button) {
+  flex: 0 0 auto;
+  margin: 0;
+}
+
 .membership-option {
   display: flex;
   align-items: center;
diff --git a/frontend/src/views/components/UserManagement/UserManagement.vue b/frontend/src/views/components/UserManagement/UserManagement.vue
index 4452fc62..9673386e 100644
--- a/frontend/src/views/components/UserManagement/UserManagement.vue
+++ b/frontend/src/views/components/UserManagement/UserManagement.vue
@@ -121,6 +121,19 @@
       <p>账号：{{ membershipUser?.Account }}</p>
       <el-form label-position="top">
         <el-form-item label="所属分组">
+          <div class="membership-selector-header">
+            <span>{{ membershipLimit > 1 ? '可选择多个分组' : '只能选择一个分组' }}</span>
+            <el-button
+              v-if="canManageGroups"
+              type="primary"
+              text
+              size="small"
+              :disabled="groupSaving"
+              @click="createMembershipGroup"
+            >
+              新建分组
+            </el-button>
+          </div>
           <fieldset
             class="membership-options"
             :aria-label="membershipLimit > 1 ? '所属分组（可多选）' : '所属分组（单选）'"
@@ -358,6 +371,7 @@ const {
   membershipLimit,
   membershipDraft,
   membershipSingleSelection,
+  createMembershipGroup,
   loadGroup,
   toggleGroup,
   saveGroup,