diff --git a/sf_dlm/models/product_supplierinfo.py b/sf_dlm/models/product_supplierinfo.py
index 05191b44..a46f4856 100644
--- a/sf_dlm/models/product_supplierinfo.py
+++ b/sf_dlm/models/product_supplierinfo.py
@@ -122,7 +122,7 @@ class ResMrpBomMo(models.Model):
     # 查bom的原材料
     def get_raw_bom(self, product):
         raw_bom = self.env['product.product'].search(
-            [('categ_id.type', '=', '原材料'), ('materials_type_id', '=', product.materials_type_id.id)])
+            [('categ_id.type', '=', '原材料'), ('materials_type_id', '=', product.materials_type_id.id)],limit=1)
         return raw_bom