diff --git a/apps/accounts/models.py b/apps/accounts/models.py
index 4253431..bd2ca34 100644
--- a/apps/accounts/models.py
+++ b/apps/accounts/models.py
@@ -52,5 +52,4 @@ class User(AbstractUser):
         return self.username
 
     def get_child(self):
-        print(self.org)
-        return [u.id for u in User.objects.filter(parent_org=self.org)]
+        return [u.org.id for u in User.objects.filter(parent_org=self.org.id)]
diff --git a/apps/counter/api/views.py b/apps/counter/api/views.py
index 9bfd34d..5592350 100644
--- a/apps/counter/api/views.py
+++ b/apps/counter/api/views.py
@@ -80,7 +80,10 @@ class DeviceInfoListAPIView(ListAPIView, RoleMixin):
         user_roles = self.get_role()
         queryset = DeviceInfo.objects.all().order_by('-last_offline_time')
         if 'staff' in user_roles or 'manager' in user_roles:
-            device_ids = [query.device_id for query in queryset if query.org == self.request.user.org]
+            child = self.request.user.get_child()
+            device_ids = [query.device_id
+                          for query in queryset
+                          if query.org == self.request.user.org or query.org.id in child]
             queryset = queryset.filter(device_id__in=device_ids)
         device_id = self.request.GET.get('device_id')
         status = self.request.GET.get('status')