diff --git a/api/database/migrations/2022_06_26_160358_add_index_to_message_table.php b/api/database/migrations/2022_06_26_160358_add_index_to_message_table.php
new file mode 100644
index 0000000..d7d2aca
--- /dev/null
+++ b/api/database/migrations/2022_06_26_160358_add_index_to_message_table.php
@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddIndexToMessageTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('push_deer_messages', function (Blueprint $table) {
+            $table->index(['uid'], 'uid');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('push_deer_messages', function (Blueprint $table) {
+            $table->dropIndex('uid');
+        });
+    }
+}