diff --git a/tests/Feature/AdminPlatformOrderExportTest.php b/tests/Feature/AdminPlatformOrderExportTest.php
index ee32b6c..5412684 100644
--- a/tests/Feature/AdminPlatformOrderExportTest.php
+++ b/tests/Feature/AdminPlatformOrderExportTest.php
@@ -12,6 +12,29 @@ class AdminPlatformOrderExportTest extends TestCase
 {
     use RefreshDatabase;
 
+    private function parseCsvToRows(string $content): array
+    {
+        // 去 BOM，避免表头第一列带 \xEF\xBB\xBF
+        if (str_starts_with($content, "\xEF\xBB\xBF")) {
+            $content = substr($content, 3);
+        }
+
+        $fp = fopen('php://temp', 'r+');
+        fwrite($fp, $content);
+        rewind($fp);
+
+        $rows = [];
+        while (($row = fgetcsv($fp)) !== false) {
+            if ($row === [null] || $row === false) {
+                continue;
+            }
+            $rows[] = $row;
+        }
+        fclose($fp);
+
+        return $rows;
+    }
+
     protected function loginAsPlatformAdmin(): void
     {
         $this->seed();
@@ -119,18 +142,33 @@ class AdminPlatformOrderExportTest extends TestCase
 
         // StreamedResponse 在测试环境下需用 streamedContent() 获取内容
         $content = $res->streamedContent();
-        $this->assertStringContainsString('订单号', $content);
-        $this->assertStringContainsString('PO_EXPORT_0001', $content);
-        $this->assertStringContainsString('同步失败原因', $content);
-        $this->assertStringContainsString('订阅ID', $content);
-        $this->assertStringContainsString('BMPA失败原因', $content);
-        $this->assertStringContainsString('最近批量标记支付并生效时间', $content);
-        $this->assertStringContainsString('最近批量标记支付并生效管理员', $content);
-        $this->assertStringContainsString('最近批量生效时间', $content);
-        $this->assertStringContainsString('最近批量生效管理员', $content);
-        $this->assertStringContainsString('退款总额', $content);
-        $this->assertStringContainsString('对账不一致', $content);
-        $this->assertStringContainsString('退款不一致', $content);
+
+        // 解析 CSV 后按“表头/行数据”断言，避免未来表头顺序/分隔符等变更造成脆断。
+        $rows = $this->parseCsvToRows($content);
+        $this->assertGreaterThanOrEqual(2, count($rows));
+
+        $headers = $rows[0];
+        $this->assertContains('订单号', $headers);
+        $this->assertContains('同步失败原因', $headers);
+        $this->assertContains('订阅ID', $headers);
+        $this->assertContains('BMPA失败原因', $headers);
+        $this->assertContains('最近批量标记支付并生效时间', $headers);
+        $this->assertContains('最近批量标记支付并生效管理员', $headers);
+        $this->assertContains('最近批量生效时间', $headers);
+        $this->assertContains('最近批量生效管理员', $headers);
+        $this->assertContains('退款总额', $headers);
+        $this->assertContains('对账不一致', $headers);
+        $this->assertContains('退款不一致', $headers);
+
+        // 至少应包含我们造的那条订单
+        $found = false;
+        foreach ($rows as $r) {
+            if (in_array('PO_EXPORT_0001', $r, true)) {
+                $found = true;
+                break;
+            }
+        }
+        $this->assertTrue($found, 'CSV should contain row for PO_EXPORT_0001');
 
         // include_meta=1 时应包含 meta(JSON) 列
         $res2 = $this->get('/admin/platform-orders/export?download=1&include_meta=1');