diff --git a/backend/app/Model/Platform.php b/backend/app/Model/Platform.php
index 8140b1e..b4ee71e 100644
--- a/backend/app/Model/Platform.php
+++ b/backend/app/Model/Platform.php
@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace App\Model;
 
+use Hyperf\Database\Model\Relations\BelongsTo;
 
 /**
  * @mixin \App_Model_Platform
@@ -12,7 +13,7 @@ class Platform extends Model
 {
     /**
      * The table associated with the model.
-     * 
+     *
      * @TODO check if we realy need the platform table, or consider use a virtual model
      */
     protected ?string $table = 'platforms';
@@ -20,10 +21,15 @@ class Platform extends Model
     /**
      * The attributes that are mass assignable.
      */
-    protected array $fillable = [];
+    protected array $fillable = ['developer_id'];
 
     /**
      * The attributes that should be cast to native types.
      */
-    protected array $casts = [];
+    protected array $casts = ['developer_id' => 'integer'];
+
+    public function developer(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'developer_id');
+    }
 }
diff --git a/backend/app/Model/User.php b/backend/app/Model/User.php
index db167b7..123e32f 100644
--- a/backend/app/Model/User.php
+++ b/backend/app/Model/User.php
@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace App\Model;
 
+use Hyperf\Database\Model\Relations\HasMany;
 use Hyperf\DbConnection\Model\Model;
 use Qbhy\HyperfAuth\Authenticatable;
 
@@ -91,6 +92,20 @@ class User extends Model implements Authenticatable
         return password_verify($password, $this->password);
     }
 
+    public function developedPlatforms(): HasMany
+    {
+        return $this->hasMany(Platform::class, 'developer_id');
+    }
+
+    protected static function boot(): void
+    {
+        parent::boot();
+
+        static::deleting(function (User $user) {
+            $user->developedPlatforms()->update(['developer_id' => 1]);
+        });
+    }
+
     /**
      * Check if refresh token is valid.
      */
diff --git a/backend/migrations/2026_03_05_000000_add_developer_id_to_platforms_table.php b/backend/migrations/2026_03_05_000000_add_developer_id_to_platforms_table.php
new file mode 100644
index 0000000..bffa69d
--- /dev/null
+++ b/backend/migrations/2026_03_05_000000_add_developer_id_to_platforms_table.php
@@ -0,0 +1,32 @@
+<?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('platforms', function (Blueprint $table) {
+            $table->unsignedBigInteger('developer_id')->default(1)->comment('数据维护者，关联 users.id');
+            $table->foreign('developer_id')->references('id')->on('users')->onDelete('restrict');
+            $table->index('developer_id', 'idx_platforms_developer_id');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('platforms', function (Blueprint $table) {
+            $table->dropForeign(['developer_id']);
+            $table->dropIndex('idx_platforms_developer_id');
+            $table->dropColumn('developer_id');
+        });
+    }
+};