diff --git a/apps/counter/api/serializers.py b/apps/counter/api/serializers.py
index b807f23..04e3a80 100644
--- a/apps/counter/api/serializers.py
+++ b/apps/counter/api/serializers.py
@@ -30,10 +30,13 @@ class DeviceCountSerializer(serializers.ModelSerializer):
         return obj.vol
 
     def get_calc_time(self, obj):
-        return obj.data_time
+        return obj.data_time.strftime('%Y-%m-%d %H:%M:%S')
 
 
 class DeviceInfoSerializer(serializers.ModelSerializer):
+    compile_time = serializers.SerializerMethodField()
+    last_connect = serializers.SerializerMethodField()
+    last_offline_time = serializers.SerializerMethodField()
 
     class Meta:
         model = DeviceInfo
@@ -46,4 +49,13 @@ class DeviceInfoSerializer(serializers.ModelSerializer):
             'online',
             'last_connect',
             'last_offline_time'
-        ]
\ No newline at end of file
+        ]
+
+    def get_compile_time(self, obj):
+        return obj.compile_time.strftime('%Y-%m-%d %H:%M:%S')
+
+    def get_last_connect(self, obj):
+        return obj.last_connect.strftime('%Y-%m-%d %H:%M:%S')
+
+    def get_last_offline_time(self, obj):
+        return obj.last_offline_time.strftime('%Y-%m-%d %H:%M:%S')
diff --git a/apps/mosquito/api/pagination.py b/apps/mosquito/api/pagination.py
index 6d381e4..e375879 100644
--- a/apps/mosquito/api/pagination.py
+++ b/apps/mosquito/api/pagination.py
@@ -3,8 +3,8 @@ from rest_framework.pagination import LimitOffsetPagination, PageNumberPaginatio
 
 class PostLimitOffsetPagination(LimitOffsetPagination):
     max_limit = 10
-    default_limit = 4
+    default_limit = 8
 
 
 class PostPageNumberPagination(PageNumberPagination):
-    page_size = 4
+    page_size = 8