diff --git a/backend/internal/handler/admin/dashboard_handler.go b/backend/internal/handler/admin/dashboard_handler.go
index e9fbb630fa..b42b395d33 100644
--- a/backend/internal/handler/admin/dashboard_handler.go
+++ b/backend/internal/handler/admin/dashboard_handler.go
@@ -675,6 +675,9 @@ func (h *DashboardHandler) GetUserBreakdown(c *gin.Context) {
 		}
 	}
 
+	// sort_by 由 repo 层 allowlist 校验;非法值静默回退默认排序(actual_cost)。
+	dim.SortBy = strings.TrimSpace(c.Query("sort_by"))
+
 	limit := 50
 	if v := c.Query("limit"); v != "" {
 		if n, err := strconv.Atoi(v); err == nil && n > 0 && n <= 200 {
diff --git a/backend/internal/handler/admin/dashboard_handler_user_breakdown_test.go b/backend/internal/handler/admin/dashboard_handler_user_breakdown_test.go
index b3a05111b3..3065eee3c4 100644
--- a/backend/internal/handler/admin/dashboard_handler_user_breakdown_test.go
+++ b/backend/internal/handler/admin/dashboard_handler_user_breakdown_test.go
@@ -59,7 +59,21 @@ func TestGetUserBreakdown_GroupIDFilter(t *testing.T) {
 	require.Equal(t, int64(42), repo.capturedDim.GroupID)
 	require.Empty(t, repo.capturedDim.Model)
 	require.Empty(t, repo.capturedDim.Endpoint)
-	require.Equal(t, 50, repo.capturedLimit) // default limit
+	require.Equal(t, 50, repo.capturedLimit)  // default limit
+	require.Empty(t, repo.capturedDim.SortBy) // no sort_by => empty (repo falls back to default)
+}
+
+func TestGetUserBreakdown_SortBy(t *testing.T) {
+	repo := &userBreakdownRepoCapture{}
+	router := newUserBreakdownRouter(repo)
+
+	req := httptest.NewRequest(http.MethodGet,
+		"/admin/dashboard/user-breakdown?start_date=2026-03-01&end_date=2026-03-16&sort_by=total_tokens", nil)
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	require.Equal(t, http.StatusOK, w.Code)
+	require.Equal(t, "total_tokens", repo.capturedDim.SortBy)
 }
 
 func TestGetUserBreakdown_ModelFilter(t *testing.T) {
diff --git a/backend/internal/pkg/usagestats/usage_log_types.go b/backend/internal/pkg/usagestats/usage_log_types.go
index a96ea670c4..29af4d2d50 100644
--- a/backend/internal/pkg/usagestats/usage_log_types.go
+++ b/backend/internal/pkg/usagestats/usage_log_types.go
@@ -164,13 +164,16 @@ type UserSpendingRankingResponse struct {
 
 // UserBreakdownItem represents per-user usage breakdown within a dimension (group, model, endpoint).
 type UserBreakdownItem struct {
-	UserID      int64   `json:"user_id"`
-	Email       string  `json:"email"`
-	Requests    int64   `json:"requests"`
-	TotalTokens int64   `json:"total_tokens"`
-	Cost        float64 `json:"cost"`         // 标准计费
-	ActualCost  float64 `json:"actual_cost"`  // 实际扣除
-	AccountCost float64 `json:"account_cost"` // 账号成本
+	UserID       int64   `json:"user_id"`
+	Email        string  `json:"email"`
+	Requests     int64   `json:"requests"`
+	InputTokens  int64   `json:"input_tokens"`  // 输入 token 累计
+	OutputTokens int64   `json:"output_tokens"` // 输出 token 累计
+	CacheTokens  int64   `json:"cache_tokens"`  // 缓存创建 + 读取 token 累计
+	TotalTokens  int64   `json:"total_tokens"`  // 输入+输出+缓存 token 累计
+	Cost         float64 `json:"cost"`          // 标准计费
+	ActualCost   float64 `json:"actual_cost"`   // 实际扣除
+	AccountCost  float64 `json:"account_cost"`  // 账号成本
 }
 
 // UserBreakdownDimension specifies the dimension to filter for user breakdown.
@@ -187,6 +190,8 @@ type UserBreakdownDimension struct {
 	RequestType *int16 // filter by request_type (non-nil to enable)
 	Stream      *bool  // filter by stream flag (non-nil to enable)
 	BillingType *int8  // filter by billing_type (non-nil to enable)
+	// SortBy 指定排序列(空 = 默认按 actual_cost)。合法值由 repo 层 allowlist 校验。
+	SortBy string
 }
 
 // APIKeyUsageTrendPoint represents API key usage trend data point
diff --git a/backend/internal/repository/usage_log_repo_trend.go b/backend/internal/repository/usage_log_repo_trend.go
index 392f1c8300..7302296683 100644
--- a/backend/internal/repository/usage_log_repo_trend.go
+++ b/backend/internal/repository/usage_log_repo_trend.go
@@ -603,6 +603,9 @@ func (r *usageLogRepository) GetUserBreakdownStats(ctx context.Context, startTim
 			COALESCE(ul.user_id, 0) as user_id,
 			COALESCE(u.email, '') as email,
 			COUNT(*) as requests,
+			COALESCE(SUM(ul.input_tokens), 0) as input_tokens,
+			COALESCE(SUM(ul.output_tokens), 0) as output_tokens,
+			COALESCE(SUM(ul.cache_creation_tokens + ul.cache_read_tokens), 0) as cache_tokens,
 			COALESCE(SUM(ul.input_tokens + ul.output_tokens + ul.cache_creation_tokens + ul.cache_read_tokens), 0) as total_tokens,
 			COALESCE(SUM(ul.total_cost), 0) as cost,
 			COALESCE(SUM(ul.actual_cost), 0) as actual_cost,
@@ -651,7 +654,13 @@ func (r *usageLogRepository) GetUserBreakdownStats(ctx context.Context, startTim
 		args = append(args, *dim.BillingType)
 	}
 
-	query += " GROUP BY ul.user_id, u.email ORDER BY actual_cost DESC"
+	// ORDER BY 列来自固定 allowlist(非用户原样字符串),避免 SQL 注入。
+	orderBy := "actual_cost"
+	switch dim.SortBy {
+	case "total_tokens", "input_tokens", "output_tokens", "cache_tokens", "requests", "cost", "actual_cost":
+		orderBy = dim.SortBy
+	}
+	query += " GROUP BY ul.user_id, u.email ORDER BY " + orderBy + " DESC"
 	if limit > 0 {
 		query += fmt.Sprintf(" LIMIT %d", limit)
 	}
@@ -674,6 +683,9 @@ func (r *usageLogRepository) GetUserBreakdownStats(ctx context.Context, startTim
 			&row.UserID,
 			&row.Email,
 			&row.Requests,
+			&row.InputTokens,
+			&row.OutputTokens,
+			&row.CacheTokens,
 			&row.TotalTokens,
 			&row.Cost,
 			&row.ActualCost,
diff --git a/frontend/src/api/admin/dashboard.ts b/frontend/src/api/admin/dashboard.ts
index dda7d8927d..97c16aa362 100644
--- a/frontend/src/api/admin/dashboard.ts
+++ b/frontend/src/api/admin/dashboard.ts
@@ -167,6 +167,8 @@ export interface UserBreakdownParams {
   endpoint?: string
   endpoint_type?: 'inbound' | 'upstream' | 'path'
   limit?: number
+  // Sort column for the ranking (allowlisted server-side; falls back to actual_cost)
+  sort_by?: 'total_tokens' | 'input_tokens' | 'output_tokens' | 'cache_tokens' | 'requests' | 'cost' | 'actual_cost'
   // Additional filter conditions
   user_id?: number
   api_key_id?: number
diff --git a/frontend/src/components/admin/usage/UserTokenRanking.vue b/frontend/src/components/admin/usage/UserTokenRanking.vue
new file mode 100644
index 0000000000..ad24ae1288
--- /dev/null
+++ b/frontend/src/components/admin/usage/UserTokenRanking.vue
@@ -0,0 +1,180 @@
+<template>
+  <div class="card p-4">
+    <!-- Header -->
+    <div class="mb-3 flex flex-wrap items-center gap-3">
+      <h3 class="text-sm font-semibold text-gray-800 dark:text-gray-100">
+        {{ t('admin.usage.tokenRanking.title') }}
+      </h3>
+      <span class="text-xs text-gray-400">{{ t('admin.usage.tokenRanking.subtitle') }}</span>
+      <div class="ml-auto flex flex-wrap items-center gap-2">
+        <input
+          v-model="search"
+          type="text"
+          class="input h-8 w-44 text-sm"
+          :placeholder="t('admin.usage.tokenRanking.searchPlaceholder')"
+        />
+        <div class="w-28">
+          <Select v-model="limit" :options="limitOptions" @change="load" />
+        </div>
+        <button
+          type="button"
+          class="btn btn-secondary h-8 px-2"
+          :title="t('common.refresh')"
+          @click="load"
+        >
+          <Icon name="refresh" size="sm" :class="{ 'animate-spin': loading }" />
+        </button>
+      </div>
+    </div>
+
+    <!-- Table -->
+    <div class="overflow-x-auto">
+      <table class="w-full text-sm">
+        <thead>
+          <tr class="border-b border-gray-100 text-xs text-gray-500 dark:border-gray-700 dark:text-gray-400">
+            <th class="w-10 py-2 pr-2 text-left font-medium">#</th>
+            <th class="py-2 pr-2 text-left font-medium">{{ t('admin.usage.tokenRanking.columns.user') }}</th>
+            <th
+              v-for="col in sortableColumns"
+              :key="col.key"
+              class="cursor-pointer select-none py-2 pl-2 text-right font-medium hover:text-primary-500"
+              :class="{ 'text-primary-600 dark:text-primary-400': sortBy === col.key }"
+              @click="setSort(col.key)"
+            >
+              {{ t(col.label) }}
+              <span v-if="sortBy === col.key" aria-hidden="true">↓</span>
+            </th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr v-if="loading">
+            <td :colspan="sortableColumns.length + 2" class="py-8 text-center">
+              <LoadingSpinner />
+            </td>
+          </tr>
+          <tr v-else-if="displayItems.length === 0">
+            <td :colspan="sortableColumns.length + 2" class="py-8 text-center text-sm text-gray-400">
+              {{ t('admin.dashboard.noDataAvailable') }}
+            </td>
+          </tr>
+          <tr
+            v-for="(item, index) in displayItems"
+            v-else
+            :key="item.user_id"
+            class="cursor-pointer border-b border-gray-50 transition-colors hover:bg-gray-50 dark:border-gray-800 dark:hover:bg-dark-700/40"
+            @click="$emit('select-user', item.user_id, item.email)"
+          >
+            <td class="py-2 pr-2 text-gray-400">{{ index + 1 }}</td>
+            <td class="max-w-[220px] truncate py-2 pr-2 text-gray-700 dark:text-gray-200" :title="item.email">
+              {{ item.email || `User #${item.user_id}` }}
+            </td>
+            <td class="py-2 pl-2 text-right text-gray-500 dark:text-gray-400">{{ item.requests.toLocaleString() }}</td>
+            <td class="py-2 pl-2 text-right text-gray-500 dark:text-gray-400">{{ fmtTokens(item.input_tokens) }}</td>
+            <td class="py-2 pl-2 text-right text-gray-500 dark:text-gray-400">{{ fmtTokens(item.output_tokens) }}</td>
+            <td class="py-2 pl-2 text-right text-gray-500 dark:text-gray-400">{{ fmtTokens(item.cache_tokens) }}</td>
+            <td class="py-2 pl-2 text-right font-medium text-gray-800 dark:text-gray-100">{{ fmtTokens(item.total_tokens) }}</td>
+            <td class="py-2 pl-2 text-right text-green-600 dark:text-green-400">${{ fmtCost(item.actual_cost) }}</td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+
+    <!-- Footer -->
+    <div v-if="!loading && items.length > 0" class="mt-2 text-right text-xs text-gray-400">
+      {{ t('admin.usage.tokenRanking.userCount', { count: displayItems.length }) }}
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { getUserBreakdown, type UserBreakdownParams } from '@/api/admin/dashboard'
+import { formatCompactNumber, formatCostFixed } from '@/utils/format'
+import type { UserBreakdownItem } from '@/types'
+import Select from '@/components/common/Select.vue'
+import Icon from '@/components/icons/Icon.vue'
+import LoadingSpinner from '@/components/common/LoadingSpinner.vue'
+
+const props = defineProps<{
+  startDate: string
+  endDate: string
+  filters: Record<string, unknown>
+  model?: string
+}>()
+
+defineEmits<{ (e: 'select-user', userId: number, email: string): void }>()
+
+const { t } = useI18n()
+
+type SortKey = NonNullable<UserBreakdownParams['sort_by']>
+const sortableColumns: { key: SortKey; label: string }[] = [
+  { key: 'requests', label: 'admin.usage.tokenRanking.columns.requests' },
+  { key: 'input_tokens', label: 'admin.usage.tokenRanking.columns.inputTokens' },
+  { key: 'output_tokens', label: 'admin.usage.tokenRanking.columns.outputTokens' },
+  { key: 'cache_tokens', label: 'admin.usage.tokenRanking.columns.cacheTokens' },
+  { key: 'total_tokens', label: 'admin.usage.tokenRanking.columns.totalTokens' },
+  { key: 'actual_cost', label: 'admin.usage.tokenRanking.columns.cost' },
+]
+
+const limitOptions = [
+  { value: 20, label: 'Top 20' },
+  { value: 50, label: 'Top 50' },
+  { value: 100, label: 'Top 100' },
+  { value: 200, label: 'Top 200' },
+]
+
+const items = ref<UserBreakdownItem[]>([])
+const loading = ref(false)
+const sortBy = ref<SortKey>('total_tokens')
+const limit = ref(50)
+const search = ref('')
+let reqSeq = 0
+
+const displayItems = computed(() => {
+  const kw = search.value.trim().toLowerCase()
+  if (!kw) return items.value
+  return items.value.filter((u) => (u.email || `user #${u.user_id}`).toLowerCase().includes(kw))
+})
+
+const fmtTokens = (v: number) => formatCompactNumber(v)
+const fmtCost = (v: number) => formatCostFixed(v, 4)
+
+const setSort = (key: SortKey) => {
+  if (sortBy.value === key) return
+  sortBy.value = key
+  load()
+}
+
+const load = async () => {
+  const seq = ++reqSeq
+  loading.value = true
+  try {
+    const params: UserBreakdownParams = {
+      ...props.filters,
+      start_date: props.startDate,
+      end_date: props.endDate,
+      sort_by: sortBy.value,
+      limit: limit.value,
+    }
+    if (props.model) params.model = props.model
+    const res = await getUserBreakdown(params)
+    if (seq !== reqSeq) return
+    items.value = res.users || []
+  } catch {
+    if (seq !== reqSeq) return
+    items.value = []
+  } finally {
+    if (seq === reqSeq) loading.value = false
+  }
+}
+
+// Reload when the shared filters / date range / model change.
+watch(
+  () => [props.startDate, props.endDate, props.model, JSON.stringify(props.filters)],
+  () => load(),
+  { immediate: true }
+)
+
+defineExpose({ reload: load })
+</script>
diff --git a/frontend/src/i18n/locales/en/admin/resources.ts b/frontend/src/i18n/locales/en/admin/resources.ts
index c6c42d4494..d7a48d0ad2 100644
--- a/frontend/src/i18n/locales/en/admin/resources.ts
+++ b/frontend/src/i18n/locales/en/admin/resources.ts
@@ -483,6 +483,21 @@ export default {
       clickToViewBalance: 'Click to view balance history',
       failedToLoadUser: 'Failed to load user info',
       userDeletedBadge: 'Deleted',
+      tokenRanking: {
+        title: 'User Token Ranking',
+        subtitle: 'Per-user token usage for the current filters and time range; click a row to drill down',
+        searchPlaceholder: 'Search user email...',
+        userCount: '{count} users',
+        columns: {
+          user: 'User',
+          requests: 'Requests',
+          inputTokens: 'Input Tokens',
+          outputTokens: 'Output Tokens',
+          cacheTokens: 'Cache Tokens',
+          totalTokens: 'Total Tokens',
+          cost: 'Cost'
+        }
+      },
       cleanup: {
         button: 'Cleanup',
         title: 'Cleanup Usage Records',
diff --git a/frontend/src/i18n/locales/zh/admin/resources.ts b/frontend/src/i18n/locales/zh/admin/resources.ts
index 8398130d84..a99203521a 100644
--- a/frontend/src/i18n/locales/zh/admin/resources.ts
+++ b/frontend/src/i18n/locales/zh/admin/resources.ts
@@ -544,6 +544,21 @@ export default {
       clickToViewBalance: '点击查看充值记录',
       failedToLoadUser: '加载用户信息失败',
       userDeletedBadge: '已删除',
+      tokenRanking: {
+        title: '用户 Token 排行',
+        subtitle: '按当前筛选与时间范围统计每个用户的 Token 用量，点击行可下钻到该用户',
+        searchPlaceholder: '搜索用户邮箱...',
+        userCount: '共 {count} 位用户',
+        columns: {
+          user: '用户',
+          requests: '请求数',
+          inputTokens: '输入 Token',
+          outputTokens: '输出 Token',
+          cacheTokens: '缓存 Token',
+          totalTokens: '总 Token',
+          cost: '费用'
+        }
+      },
       cleanup: {
         button: '清理',
         title: '清理使用记录',
diff --git a/frontend/src/types/index.ts b/frontend/src/types/index.ts
index 990ef0575c..a60c70116c 100644
--- a/frontend/src/types/index.ts
+++ b/frontend/src/types/index.ts
@@ -1594,6 +1594,9 @@ export interface UserBreakdownItem {
   user_id: number
   email: string
   requests: number
+  input_tokens: number
+  output_tokens: number
+  cache_tokens: number
   total_tokens: number
   cost: number
   actual_cost: number
diff --git a/frontend/src/views/admin/UsageView.vue b/frontend/src/views/admin/UsageView.vue
index eb9a047662..3509b99d72 100644
--- a/frontend/src/views/admin/UsageView.vue
+++ b/frontend/src/views/admin/UsageView.vue
@@ -109,6 +109,14 @@
         </button>
       </div>
       <div v-show="activeTab === 'usage'">
+        <UserTokenRanking
+          class="mb-4"
+          :start-date="startDate"
+          :end-date="endDate"
+          :filters="breakdownFilters"
+          :model="filters.model"
+          @select-user="handleRankingSelectUser"
+        />
         <UsageTable
           :data="usageLogs"
           :loading="loading"
@@ -167,6 +175,7 @@ import { resolveUsageRequestType, requestTypeToLegacyStream } from '@/utils/usag
 import AppLayout from '@/components/layout/AppLayout.vue'; import Pagination from '@/components/common/Pagination.vue'; import Select from '@/components/common/Select.vue'; import DateRangePicker from '@/components/common/DateRangePicker.vue'
 import UsageStatsCards from '@/components/admin/usage/UsageStatsCards.vue'; import UsageFilters from '@/components/admin/usage/UsageFilters.vue'
 import UsageTable from '@/components/admin/usage/UsageTable.vue'; import UsageExportProgress from '@/components/admin/usage/UsageExportProgress.vue'
+import UserTokenRanking from '@/components/admin/usage/UserTokenRanking.vue'
 import UsageCleanupDialog from '@/components/admin/usage/UsageCleanupDialog.vue'
 import UserBalanceHistoryModal from '@/components/admin/user/UserBalanceHistoryModal.vue'
 import OpsErrorLogTable from '@/views/admin/ops/components/OpsErrorLogTable.vue'
@@ -235,6 +244,12 @@ const handleUserClick = async (userId: number) => {
   }
 }
 
+// Drill down from the per-user token ranking: scope the whole usage view to that user.
+const handleRankingSelectUser = (userId: number) => {
+  filters.value = { ...filters.value, user_id: userId }
+  applyFilters()
+}
+
 const granularityOptions = computed(() => [{ value: 'day', label: t('admin.dashboard.day') }, { value: 'hour', label: t('admin.dashboard.hour') }])
 // Use local timezone to avoid UTC timezone issues
 const formatLD = (d: Date) => {
diff --git a/frontend/src/views/admin/__tests__/UsageView.spec.ts b/frontend/src/views/admin/__tests__/UsageView.spec.ts
index 1da0d09c04..f83d609b86 100644
--- a/frontend/src/views/admin/__tests__/UsageView.spec.ts
+++ b/frontend/src/views/admin/__tests__/UsageView.spec.ts
@@ -163,7 +163,7 @@ describe('admin UsageView distribution metric toggles', () => {
         UserBalanceHistoryModal: true, AuditLogModal: true, Pagination: true, Select: true,
         DateRangePicker: true, Icon: true, TokenUsageTrend: true,
         ModelDistributionChart: ModelDistributionChartStub, GroupDistributionChart: GroupDistributionChartStub,
-        EndpointDistributionChart: true,
+        EndpointDistributionChart: true, UserTokenRanking: true,
       } },
     })
     vi.advanceTimersByTime(120)
@@ -201,6 +201,7 @@ describe('admin UsageView distribution metric toggles', () => {
           TokenUsageTrend: true,
           ModelDistributionChart: ModelDistributionChartStub,
           GroupDistributionChart: GroupDistributionChartStub,
+          UserTokenRanking: true,
         },
       },
     })
@@ -281,6 +282,7 @@ describe('admin UsageView handleUserClick', () => {
           ModelDistributionChart: true,
           GroupDistributionChart: true,
           EndpointDistributionChart: true,
+          UserTokenRanking: true,
         },
       },
     })
@@ -326,7 +328,7 @@ describe('admin UsageView errors tab filter forwarding', () => {
         UserBalanceHistoryModal: true, AuditLogModal: true, Pagination: true, Select: true,
         DateRangePicker: true, Icon: true, TokenUsageTrend: true,
         ModelDistributionChart: true, GroupDistributionChart: true, EndpointDistributionChart: true,
-        OpsErrorLogTable: true, OpsErrorDetailModal: true,
+        UserTokenRanking: true, OpsErrorLogTable: true, OpsErrorDetailModal: true,
       } },
     })
     vi.advanceTimersByTime(120)