diff --git a/README.md b/README.md
index 7d455c92..9b18e4be 100644
--- a/README.md
+++ b/README.md
@@ -88,7 +88,7 @@ Chat2DB Pro supports all the following databases, including the most requested R
 
 ## ⏬ Download and Install Chat2DB(Pro)
 
-- Download installation package from [official website](https://chat2db-ai.com/download)
+- Download installation package from [official website](https://chat2db.ai/download)
 - Double click package to install
 
 
diff --git a/chat2db-server/chat2db-plugins/chat2db-mysql/src/main/java/ai/chat2db/plugin/mysql/builder/MysqlSqlBuilder.java b/chat2db-server/chat2db-plugins/chat2db-mysql/src/main/java/ai/chat2db/plugin/mysql/builder/MysqlSqlBuilder.java
index 4ff06797..dc27b5af 100644
--- a/chat2db-server/chat2db-plugins/chat2db-mysql/src/main/java/ai/chat2db/plugin/mysql/builder/MysqlSqlBuilder.java
+++ b/chat2db-server/chat2db-plugins/chat2db-mysql/src/main/java/ai/chat2db/plugin/mysql/builder/MysqlSqlBuilder.java
@@ -182,9 +182,6 @@ public class MysqlSqlBuilder extends DefaultSqlBuilder {
             sql.append(" MODIFY COLUMN ");
             MysqlColumnTypeEnum typeEnum = MysqlColumnTypeEnum.getByType(column.getColumnType());
             sql.append(typeEnum.buildColumn(column));
-            if (StringUtils.isNotBlank(column.getComment())) {
-                sql.append(" COMMENT '").append(column.getComment()).append("'");
-            }
             sql.append(" FIRST;\n");
             n++;
             if (Arrays.equals(newArray, targetArray)) {
@@ -213,9 +210,6 @@ public class MysqlSqlBuilder extends DefaultSqlBuilder {
             sql.append(" MODIFY COLUMN ");
             MysqlColumnTypeEnum typeEnum = MysqlColumnTypeEnum.getByType(column.getColumnType());
             sql.append(typeEnum.buildColumn(column));
-            if (StringUtils.isNotBlank(column.getComment())) {
-                sql.append(" COMMENT '").append(column.getComment()).append("'");
-            }
             sql.append(" AFTER ");
             sql.append(oldTable.getColumnList().get(max).getName());
             sql.append(";\n");
@@ -246,9 +240,6 @@ public class MysqlSqlBuilder extends DefaultSqlBuilder {
                 sql.append(" MODIFY COLUMN ");
                 MysqlColumnTypeEnum typeEnum = MysqlColumnTypeEnum.getByType(column.getColumnType());
                 sql.append(typeEnum.buildColumn(column));
-                if (StringUtils.isNotBlank(column.getComment())) {
-                    sql.append(" COMMENT '").append(column.getComment()).append("'");
-                }
                 sql.append(" AFTER ");
                 AtomicInteger continuousDataCount = new AtomicInteger(0);
                 String[] newArray = moveElement(originalArray, i, a, targetArray, continuousDataCount);