diff --git a/src/main/resources/_sql/init/mysql/v0.8.sql b/src/main/resources/_sql/init/mysql/v0.8.sql
index 46d3bcb..cbd2501 100644
--- a/src/main/resources/_sql/init/mysql/v0.8.sql
+++ b/src/main/resources/_sql/init/mysql/v0.8.sql
@@ -88,3 +88,9 @@ INSERT INTO material_manage.material (ID, PARENT_ID, CATEGORY1, CATEGORY2, CATEG
 UPDATE MATERIAL SET ROUND_BIT = 0, ROUND_METHOD = 'normal' WHERE ID IN ('2001001', '2001002', '2001008', '2003004', '2003005', '2003005001', '3001001002', '3001001001', '3001002002', '3001002001', '5509001', '5509002', '5509003', '2001003', '2001006', '2001013', '2001019', '2001025', '2001026', '2003006', '2003007', '2003012', '2003008', '2003009', '2003015', '2003016', '2003017001', '2003017002', '2003021', '2003022', '2004004', '4003001001', '4003001002', '4003002001', '4003002002', '4005001', '6001059', '6001071', '6001080', '6001086', '6001089', '6001092', '6002001', '6002002', '6002003', '6002004', '6002005', '6002006', '6003001', '6003003', '6005005', '6005009', '6005015', '6007002');
 UPDATE MATERIAL SET ROUND_BIT = 2, ROUND_METHOD = 'none' WHERE ID IN ('3003002001', '3003002002', '3003003', '5007003001');
 UPDATE MATERIAL SET ROUND_BIT = 1, ROUND_METHOD = 'none' WHERE ID IN ('2005002', '2009028', '2009033', '5005001', '5005002', '5005003', '5005006', '5005007', '5005009', '5006001', '5006002', '5009002', '6001002', '6001003');
+
+-- 更新现有记录的tax为9
+UPDATE MATERIAL SET tax = 9 WHERE tax IS NULL OR tax = 0;
+
+-- 修改表结构,设置tax字段默认值为9
+ALTER TABLE MATERIAL MODIFY COLUMN tax int DEFAULT 9 COMMENT '税率（%）';
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