diff --git a/backend/migrations/2026_01_30_150000_add_raw_hash_to_orders_table.php b/backend/migrations/2026_01_30_150000_add_raw_hash_to_orders_table.php
new file mode 100644
index 0000000..21e3f04
--- /dev/null
+++ b/backend/migrations/2026_01_30_150000_add_raw_hash_to_orders_table.php
@@ -0,0 +1,28 @@
+<?php
+
+use Hyperf\Database\Schema\Schema;
+use Hyperf\Database\Schema\Blueprint;
+use Hyperf\Database\Migrations\Migration;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('orders', function (Blueprint $table) {
+            $table->char('raw_hash', 32)->nullable()->default(null)->comment('raw 字段的 MD5 哈希值，用于检测数据变化');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('orders', function (Blueprint $table) {
+            $table->dropColumn('raw_hash');
+        });
+    }
+};