diff --git a/apps/pum/serializers.py b/apps/pum/serializers.py
index a9058785..675c9b7b 100644
--- a/apps/pum/serializers.py
+++ b/apps/pum/serializers.py
@@ -1,7 +1,7 @@
 from rest_framework import serializers
 from apps.utils.serializers import CustomModelSerializer
 from apps.utils.constants import EXCLUDE_FIELDS_DEPT, EXCLUDE_FIELDS_BASE, EXCLUDE_FIELDS
-from rest_framework.exceptions import ValidationError
+from rest_framework.exceptions import ValidationError, ParseError
 
 from apps.pum.models import Supplier, PuPlan, PuPlanItem, PuOrder, PuOrderItem, SupplierAudit
 from apps.mtm.serializers import MaterialSerializer, MaterialSimpleSerializer
@@ -151,4 +151,10 @@ class SupplierAuditSerializer(CustomModelSerializer):
     class Meta:
         model = SupplierAudit
         fields = "__all__"
-        read_only_fields = EXCLUDE_FIELDS_BASE + ['ticket']
\ No newline at end of file
+        read_only_fields = EXCLUDE_FIELDS_BASE + ['ticket']
+    
+    def create(self, validated_data):
+        name = validated_data["name"]
+        if Supplier.objects.filter(name=name).exists():
+            raise ParseError('供应商名称已存在')
+        return super().create(validated_data)
\ No newline at end of file