diff --git a/app/Http/Controllers/Admin/DashboardController.php b/app/Http/Controllers/Admin/DashboardController.php
index dd6dd84..295c3b5 100644
--- a/app/Http/Controllers/Admin/DashboardController.php
+++ b/app/Http/Controllers/Admin/DashboardController.php
@@ -84,6 +84,39 @@ class DashboardController extends Controller
             ]
         );
 
+        // 趋势卡（最小可用）：近 7 天平台订单按天统计（订单数 + 已付金额）
+        $trendDays = 7;
+        $trendStart = now()->startOfDay()->subDays($trendDays - 1);
+        $trendEnd = now()->endOfDay();
+
+        $trendRawRows = PlatformOrder::query()
+            ->selectRaw("DATE(created_at) as d")
+            ->selectRaw('COUNT(*) as cnt')
+            ->selectRaw("SUM(CASE WHEN payment_status = 'paid' THEN paid_amount ELSE 0 END) as paid_sum")
+            ->whereBetween('created_at', [$trendStart, $trendEnd])
+            ->groupBy('d')
+            ->orderBy('d')
+            ->get();
+
+        $trendByDate = [];
+        foreach ($trendRawRows as $r) {
+            $trendByDate[(string) $r->d] = [
+                'date' => (string) $r->d,
+                'count' => (int) ($r->cnt ?? 0),
+                'paid_sum' => (float) ($r->paid_sum ?? 0),
+            ];
+        }
+
+        $platformOrderTrend7d = [];
+        for ($i = 0; $i < $trendDays; $i++) {
+            $day = $trendStart->copy()->addDays($i)->format('Y-m-d');
+            $platformOrderTrend7d[] = $trendByDate[$day] ?? [
+                'date' => $day,
+                'count' => 0,
+                'paid_sum' => 0.0,
+            ];
+        }
+
         $recentPlatformOrders = PlatformOrder::query()
             ->orderByDesc('id')
             ->limit(5)
@@ -111,6 +144,7 @@ class DashboardController extends Controller
         return view('admin.dashboard', [
             'adminName' => $admin->name,
             'stats' => $stats,
+            'platformOrderTrend7d' => $platformOrderTrend7d,
             'recentPlatformOrders' => $recentPlatformOrders,
             'planOrderShare' => $planOrderShare,
             'planIdToName' => $planIdToName,
diff --git a/resources/views/admin/dashboard.blade.php b/resources/views/admin/dashboard.blade.php
index 7556ea8..ae1c02a 100644
--- a/resources/views/admin/dashboard.blade.php
+++ b/resources/views/admin/dashboard.blade.php
@@ -82,8 +82,36 @@
 <div class="two-col mb-20" data-role="analysis-skeleton">
     <div class="card">
         <h3 class="mt-0">趋势</h3>
-        <div class="muted">（占位）后续接入：平台订单金额/笔数趋势、续费转化、同步成功率等。</div>
-        <div class="muted muted-xs mt-10">说明：当前阶段先对齐 Ant Design Pro Analysis 的版式骨架，聚合指标后续分步接入。</div>
+        <div class="muted">近7天平台订单（按天）</div>
+
+        @php
+            $trendRows = (array) ($platformOrderTrend7d ?? []);
+        @endphp
+
+        <table class="mt-10" data-role="platform-order-trend-7d">
+            <thead>
+            <tr>
+                <th>日期</th>
+                <th>订单数</th>
+                <th>已付金额</th>
+            </tr>
+            </thead>
+            <tbody>
+            @forelse($trendRows as $row)
+                <tr>
+                    <td>{{ (string) ($row['date'] ?? '') }}</td>
+                    <td>{{ (int) ($row['count'] ?? 0) }}</td>
+                    <td>¥{{ number_format((float) ($row['paid_sum'] ?? 0), 2) }}</td>
+                </tr>
+            @empty
+                <tr>
+                    <td colspan="3" class="muted">暂无数据</td>
+                </tr>
+            @endforelse
+            </tbody>
+        </table>
+
+        <div class="muted muted-xs mt-10">说明：先接入最小可用趋势数据；后续再补时间范围切换、维度切换与可视化图表。</div>
     </div>
     <div class="card">
         <h3 class="mt-0">排行</h3>
diff --git a/tests/Feature/AdminDashboardPlatformOrderTrend7dShouldRenderTest.php b/tests/Feature/AdminDashboardPlatformOrderTrend7dShouldRenderTest.php
new file mode 100644
index 0000000..a076e48
--- /dev/null
+++ b/tests/Feature/AdminDashboardPlatformOrderTrend7dShouldRenderTest.php
@@ -0,0 +1,90 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Admin;
+use App\Models\Merchant;
+use App\Models\PlatformOrder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Cache;
+use Tests\TestCase;
+
+class AdminDashboardPlatformOrderTrend7dShouldRenderTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_dashboard_platform_order_trend_7d_should_render(): void
+    {
+        Cache::flush();
+
+        $this->loginAsPlatformAdmin();
+
+        $merchantId = (int) Merchant::query()->value('id');
+        $platformAdminId = (int) Admin::query()->where('email', 'platform.admin@demo.local')->value('id');
+
+        $d3 = now()->subDays(3)->format('Y-m-d');
+        $d0 = now()->format('Y-m-d');
+
+        $po1 = PlatformOrder::query()->create([
+            'merchant_id' => $merchantId,
+            'plan_id' => null,
+            'site_subscription_id' => null,
+            'created_by_admin_id' => $platformAdminId ?: null,
+            'order_no' => 'PO_TREND_D3',
+            'order_type' => 'new_purchase',
+            'status' => 'pending',
+            'payment_status' => 'paid',
+            'payable_amount' => 10,
+            'paid_amount' => 10,
+        ]);
+
+        $po2 = PlatformOrder::query()->create([
+            'merchant_id' => $merchantId,
+            'plan_id' => null,
+            'site_subscription_id' => null,
+            'created_by_admin_id' => $platformAdminId ?: null,
+            'order_no' => 'PO_TREND_D0',
+            'order_type' => 'new_purchase',
+            'status' => 'pending',
+            'payment_status' => 'unpaid',
+            'payable_amount' => 20,
+            'paid_amount' => 0,
+        ]);
+
+        // 强制把 created_at 调整到目标日期（避免依赖 create() 的当前时间）
+        PlatformOrder::query()->where('id', $po1->id)->update([
+            'created_at' => now()->subDays(3)->startOfDay(),
+            'updated_at' => now()->subDays(3)->startOfDay(),
+        ]);
+
+        PlatformOrder::query()->where('id', $po2->id)->update([
+            'created_at' => now()->startOfDay(),
+            'updated_at' => now()->startOfDay(),
+        ]);
+
+        Cache::flush();
+
+        $res = $this->get('/admin');
+        $res->assertOk();
+
+        $res->assertSee('data-role="platform-order-trend-7d"', false);
+        $res->assertSee('近7天平台订单（按天）');
+
+        // 断言日期行出现（只验证两个代表点）
+        $res->assertSee($d3, false);
+        $res->assertSee($d0, false);
+
+        // 已付金额：PO_TREND_D3 10 元应进入 paid_sum
+        $res->assertSee('¥10.00');
+    }
+}