diff --git a/src/main/resources/sql/20181122/alter_asn_ip_cfg_asn_no.sql b/src/main/resources/sql/20181122/alter_asn_ip_cfg_asn_no.sql
new file mode 100644
index 000000000..097260572
--- /dev/null
+++ b/src/main/resources/sql/20181122/alter_asn_ip_cfg_asn_no.sql
@@ -0,0 +1,2 @@
+#修改asn ip cfg 的asn id所在列 user_region1的大小,以便能在其上创建索引
+ALTER TABLE asn_ip_cfg MODIFY COLUMN user_region1 VARCHAR(20) DEFAULT NULL;
\ No newline at end of file