diff --git a/app/Models/CommonConfig.php b/app/Models/CommonConfig.php
index e16557f7d..29c0601f0 100644
--- a/app/Models/CommonConfig.php
+++ b/app/Models/CommonConfig.php
@@ -25,7 +25,7 @@
 
 class CommonConfig extends Model
 {
-    protected $primaryKey = ['name', 'namespace'];
+    protected $primaryKey = 'id';
     public $incrementing = false;
     protected $fillable = ['name', 'namespace', 'value'];
 
diff --git a/database/migrations/2017_02_28_031017_common_configs.php b/database/migrations/2017_02_28_031017_common_configs.php
index 3b206336d..da4e36dd8 100644
--- a/database/migrations/2017_02_28_031017_common_configs.php
+++ b/database/migrations/2017_02_28_031017_common_configs.php
@@ -30,11 +30,14 @@ class CommonConfigs extends Migration
     public function up()
     {
         Schema::create('common_configs', function (Blueprint $table) {
+            $table->increments('id')->comment('config id');
             $table->string('name', 100)->comment('配置名称');
             $table->string('namespace', 100)->comment('配置命名空间');
             $table->text('value')->nullable()->comment('缓存值');
             $table->timestamps();
-            $table->primary(['name', 'namespace']);
+            $table->unique(['name', 'namespace']);
+            $table->index('name');
+            $table->index('namespace');
         });
     }
 
diff --git a/database/seeds/CommonConfigSeeder.php b/database/seeds/CommonConfigSeeder.php
index 5c0e7ffd7..8bd282f86 100644
--- a/database/seeds/CommonConfigSeeder.php
+++ b/database/seeds/CommonConfigSeeder.php
@@ -28,10 +28,10 @@ class CommonConfigSeeder extends Seeder
      */
     public function run()
     {
-        CommonConfig::create([
-            'name' => 'default_role',
-            'namespace' => 'user',
-            'value' => 2,
-        ]);
+        $configire = new CommonConfig();
+        $configire->namespace = 'user';
+        $configire->name = 'default_role';
+        $configire->value = 2;
+        $configire->save();
     }
 }