diff --git a/apps/counter/api/serializers.py b/apps/counter/api/serializers.py
index c485202..3b205ff 100644
--- a/apps/counter/api/serializers.py
+++ b/apps/counter/api/serializers.py
@@ -252,7 +252,7 @@ class DeviceInfoSerializer(serializers.ModelSerializer):
 
         # 区分一代和二代设备
         if obj.chip_type == 'AIR-V2':
-            if self.mosq_device_info and self.mosq_device_info.count:
+            if self.mosq_device_info and self.mosq_device_info.count is not None:
                 return str(self.mosq_device_info.count)
 
         if self.latest:
@@ -262,7 +262,7 @@ class DeviceInfoSerializer(serializers.ModelSerializer):
     def get_signal(self, obj) -> str:
         # 区分一代和二代设备
         if obj.chip_type == 'AIR-V2':
-            if self.mosq_device_info and self.mosq_device_info.signal:
+            if self.mosq_device_info and self.mosq_device_info.signal is not None:
                 return str(self.mosq_device_info.signal)
 
         if self.latest:
@@ -272,7 +272,7 @@ class DeviceInfoSerializer(serializers.ModelSerializer):
     def get_energy(self, obj) -> str:
         # 区分一代和二代设备
         if obj.chip_type == 'AIR-V2':
-            if self.mosq_device_info and self.mosq_device_info.energy:
+            if self.mosq_device_info and self.mosq_device_info.energy is not None:
                 return str(self.mosq_device_info.energy)
 
         if self.latest:
@@ -291,7 +291,7 @@ class DeviceInfoSerializer(serializers.ModelSerializer):
     def get_time(self, obj):
         # 区分一代和二代设备
         if obj.chip_type == 'AIR-V2':
-            if self.mosq_device_info and self.mosq_device_info.update_time:
+            if self.mosq_device_info and self.mosq_device_info.update_time is not None:
                 eastern = pytz.timezone('Asia/Shanghai')
                 update_time = self.mosq_device_info.update_time.astimezone(eastern)
                 return update_time.strftime('%Y-%m-%d %H:%M:%S')