diff --git a/klp-erp/src/main/resources/mapper/erp/PurchaseRequirementCalcMapper.xml b/klp-erp/src/main/resources/mapper/erp/PurchaseRequirementCalcMapper.xml
index dedbcf95..cf5e714b 100644
--- a/klp-erp/src/main/resources/mapper/erp/PurchaseRequirementCalcMapper.xml
+++ b/klp-erp/src/main/resources/mapper/erp/PurchaseRequirementCalcMapper.xml
@@ -48,7 +48,7 @@
           AND status = 0
           AND data_type = 0
           AND item_type = 'product'
-          AND (material_type IS NULL OR material_type <> '废品')
+          AND (material_type IS NULL OR material_type != '废品')
         GROUP BY item_id
     </select>
 
@@ -62,7 +62,7 @@
           AND status = 0
           AND data_type = 0
           AND item_type = 'raw_material'
-          AND (material_type IS NULL OR material_type <> '废品')
+          AND (material_type IS NULL OR material_type != '废品')
         GROUP BY item_id
     </select>