diff --git a/apps/wpm/serializers.py b/apps/wpm/serializers.py
index 0bb19ccd..d5997d15 100644
--- a/apps/wpm/serializers.py
+++ b/apps/wpm/serializers.py
@@ -212,6 +212,11 @@ class MlogbDefectSerializer(CustomModelSerializer):
         model = MlogbDefect
         fields = ["id", "defect_name", "count", "mlogb", "defect", "defect_okcate"]
         read_only_fields = EXCLUDE_FIELDS_BASE + ["mlogb"]
+    
+    def validate(self, attrs):
+        if attrs["count"] < 0:
+            raise serializers.ValidationError("存在负数!")
+        return attrs
 
 class MlogbSerializer(CustomModelSerializer):
     material_out_ = MaterialSimpleSerializer(
@@ -675,6 +680,8 @@ class MlogbInSerializer(CustomModelSerializer):
                         'wm_in': {'required': True, "allow_empty": False}}
     
     def validate(self, attrs):
+        if attrs["count_use"] < 0 or attrs["count_pn_jgqbl"] < 0 or attrs["count_break"] < 0:
+            raise ParseError('存在负数!')
         mlog:Mlog = attrs['mlog']
         is_fix = mlog.is_fix
         mtask: Mtask = attrs.get("mtask", None)
@@ -739,6 +746,10 @@ class MlogbInUpdateSerializer(CustomModelSerializer):
         model = Mlogb
         fields = ['id', 'count_use', 'count_pn_jgqbl', 'note', 'mlogbdefect']
 
+    def validate(self, attrs):
+        if attrs["count_use"] < 0 or attrs["count_pn_jgqbl"] < 0:
+            raise ParseError('存在负数!')
+        return attrs
     def update(self, instance, validated_data):
         mlog: Mlog =  instance.mlog
         mlogbdefect = validated_data.pop("mlogbdefect", None)