diff --git a/fir_ser/api/migrations/0012_auto_20210127_2101.py b/fir_ser/api/migrations/0012_auto_20210127_2101.py
new file mode 100644
index 0000000..4caa2ff
--- /dev/null
+++ b/fir_ser/api/migrations/0012_auto_20210127_2101.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.0.3 on 2021-01-27 21:01
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0011_auto_20210125_1137'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='udidsyncdeveloper',
+            name='platform',
+            field=models.SmallIntegerField(choices=[(0, 'fly分发'), (1, 'app developer')], default=0, verbose_name='udid所在平台'),
+        ),
+    ]
diff --git a/fir_ser/api/utils/serializer.py b/fir_ser/api/utils/serializer.py
index 196335d..64486ca 100644
--- a/fir_ser/api/utils/serializer.py
+++ b/fir_ser/api/utils/serializer.py
@@ -11,11 +11,6 @@ logger = logging.getLogger(__file__)
 token_obj = DownloadToken()
 
 
-def get_head_img(obj):
-    storage = Storage(obj)
-    return storage.get_download_url(obj.head_img)
-
-
 class UserInfoSerializer(serializers.ModelSerializer):
     class Meta:
         model = models.UserInfo
@@ -26,6 +21,10 @@ class UserInfoSerializer(serializers.ModelSerializer):
 
     head_img = serializers.SerializerMethodField()
 
+    def get_head_img(self, obj):
+        storage = Storage(obj)
+        return storage.get_download_url(obj.head_img)
+
 
 class AppsSerializer(serializers.ModelSerializer):
     class Meta: