diff --git a/docs/bi-refactor-roadmap.md b/docs/bi-refactor-roadmap.md
index 801dcda..dc3a5ed 100644
--- a/docs/bi-refactor-roadmap.md
+++ b/docs/bi-refactor-roadmap.md
@@ -169,6 +169,7 @@ SUM(fee) / NULLIF(SUM(kwh), 0)
 ### 阶段 C：数据可信度
 
 - 已完成电能数据截至时间和实际趋势月展示。
+- 电能日期下钻自动核对日汇总与订单全量合计的日期、车辆范围、电量和费用，并显式展示通过或差异状态。
 - 已完成氢能结构化故障状态与重试体验。
 - 已完成里程今日仪表快照复用：普通查询命中分钟级快照，手动刷新生成一致的分页快照。
 - 已在各 BI 模块头部提供当前数据源的真实请求状态、失败率和最后成功/失败时间。
diff --git a/src/modules/energy/ElectricDaily.tsx b/src/modules/energy/ElectricDaily.tsx
index c2ce1b0..f84b426 100644
--- a/src/modules/energy/ElectricDaily.tsx
+++ b/src/modules/energy/ElectricDaily.tsx
@@ -1,5 +1,5 @@
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
-import { BatteryCharging, CalendarDays, ChevronRight, MapPin, Plug, TrendingUp, Truck, Wallet } from 'lucide-react';
+import { BatteryCharging, CalendarDays, CheckCircle2, ChevronRight, MapPin, Plug, TrendingUp, TriangleAlert, Truck, Wallet } from 'lucide-react';
 import { motion, AnimatePresence } from 'motion/react';
 import TrendBadge from './TrendBadge';
 import { fetchElectricMonthly, fetchElectricOrders } from './api';
@@ -20,6 +20,7 @@ import {
   normalizeDateRange,
   type DateRangeMode,
 } from './date-range';
+import { reconcileElectricDaily } from './electric-reconciliation';
 
 const VEHICLE_SCOPE_OPTIONS: readonly AnalysisScopeOption<ElectricVehicleScope>[] = [
   { id: 'all', label: '全部车辆' },
@@ -284,6 +285,9 @@ export default function ElectricDaily() {
                       const abnormalBg = isAbnormal
                         ? d.chainPct > 0 ? 'bg-emerald-50/40' : 'bg-red-50/40'
                         : 'bg-slate-50/50';
+                      const reconciliation = orders?.date === d.date
+                        ? reconcileElectricDaily(d, orders, vehicleScope)
+                        : null;
                       return (
                         <div key={d.date} className="border-t border-slate-100">
                           <button
@@ -304,6 +308,25 @@ export default function ElectricDaily() {
                           </button>
                           {selectedDate === d.date && (
                             <div id={`electric-orders-${d.date}`} className="border-t border-blue-100 bg-blue-50/40 px-3 py-3 md:pl-9">
+                              {orders && reconciliation && (
+                                <div
+                                  role={reconciliation.matches ? 'status' : 'alert'}
+                                  className={`mb-2 flex items-start gap-2 rounded-lg border px-3 py-2 text-[10px] font-bold ${
+                                  reconciliation.matches
+                                    ? 'border-emerald-100 bg-emerald-50 text-emerald-700'
+                                    : 'border-amber-200 bg-amber-50 text-amber-800'
+                                  }`}
+                                >
+                                  {reconciliation.matches
+                                    ? <CheckCircle2 size={14} className="mt-0.5 shrink-0" />
+                                    : <TriangleAlert size={14} className="mt-0.5 shrink-0" />}
+                                  <span>
+                                    {reconciliation.matches
+                                      ? `口径核对通过：日汇总与 ${orders.recordCount} 笔订单全量合计一致`
+                                      : `口径存在差异：电量 ${reconciliation.kwhDifference >= 0 ? '+' : ''}${reconciliation.kwhDifference.toFixed(2)} 度 · 费用 ${reconciliation.feeDifference >= 0 ? '+' : ''}${reconciliation.feeDifference.toFixed(2)} 元${!reconciliation.dateMatches || !reconciliation.scopeMatches ? ' · 日期或车辆范围不一致' : ''}`}
+                                  </span>
+                                </div>
+                              )}
                               {ordersError ? (
                                 <ErrorState message={ordersError} variant="inline" />
                               ) : !orders || orders.date !== d.date ? (
diff --git a/src/modules/energy/electric-reconciliation.test.ts b/src/modules/energy/electric-reconciliation.test.ts
new file mode 100644
index 0000000..1de0c15
--- /dev/null
+++ b/src/modules/energy/electric-reconciliation.test.ts
@@ -0,0 +1,44 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { reconcileElectricDaily } from './electric-reconciliation.js';
+import type { ElectricChargeOrderResponse, ElectricDailyRow } from './types.js';
+
+const daily: ElectricDailyRow = {
+  date: '2026-07-01',
+  kwh: 2736.67,
+  fee: 552.92,
+  chainPct: 0,
+};
+
+const orders: ElectricChargeOrderResponse = {
+  date: '2026-07-01',
+  vehicleScope: 'all',
+  recordCount: 29,
+  totalKwh: 2736.67,
+  totalFee: 552.92,
+  truncated: false,
+  items: [],
+};
+
+test('matches a daily aggregate to the full order summary at hundredth precision', () => {
+  assert.deepEqual(reconcileElectricDaily(daily, orders, 'all'), {
+    matches: true,
+    dateMatches: true,
+    scopeMatches: true,
+    kwhDifference: 0,
+    feeDifference: 0,
+  });
+});
+
+test('reports amount, date, and scope differences without averaging detail rows', () => {
+  const result = reconcileElectricDaily(
+    daily,
+    { ...orders, date: '2026-07-02', vehicleScope: 'lingniu', totalKwh: 2736.68, totalFee: 550 },
+    'all',
+  );
+  assert.equal(result.matches, false);
+  assert.equal(result.dateMatches, false);
+  assert.equal(result.scopeMatches, false);
+  assert.equal(result.kwhDifference, 0.01);
+  assert.equal(result.feeDifference, -2.92);
+});
diff --git a/src/modules/energy/electric-reconciliation.ts b/src/modules/energy/electric-reconciliation.ts
new file mode 100644
index 0000000..f471d1e
--- /dev/null
+++ b/src/modules/energy/electric-reconciliation.ts
@@ -0,0 +1,35 @@
+import type { ElectricChargeOrderResponse, ElectricDailyRow, ElectricVehicleScope } from './types';
+
+export interface ElectricDailyReconciliation {
+  matches: boolean;
+  dateMatches: boolean;
+  scopeMatches: boolean;
+  kwhDifference: number;
+  feeDifference: number;
+}
+
+function hundredths(value: number): number {
+  return Math.round(value * 100);
+}
+
+export function reconcileElectricDaily(
+  daily: ElectricDailyRow,
+  orders: ElectricChargeOrderResponse,
+  expectedScope: ElectricVehicleScope,
+): ElectricDailyReconciliation {
+  const dateMatches = daily.date === orders.date;
+  const scopeMatches = expectedScope === orders.vehicleScope;
+  const kwhDifferenceInHundredths = hundredths(orders.totalKwh) - hundredths(daily.kwh);
+  const feeDifferenceInHundredths = hundredths(orders.totalFee) - hundredths(daily.fee);
+
+  return {
+    matches: dateMatches
+      && scopeMatches
+      && kwhDifferenceInHundredths === 0
+      && feeDifferenceInHundredths === 0,
+    dateMatches,
+    scopeMatches,
+    kwhDifference: kwhDifferenceInHundredths / 100,
+    feeDifference: feeDifferenceInHundredths / 100,
+  };
+}