diff --git a/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlCreateTableSqlBuilder.java b/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlCreateTableSqlBuilder.java
index d974b47e..fb6b7da0 100644
--- a/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlCreateTableSqlBuilder.java
+++ b/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlCreateTableSqlBuilder.java
@@ -12,16 +12,18 @@
 import org.hswebframework.ezorm.rdb.operator.builder.fragments.ddl.CreateIndexParameter;
 import org.hswebframework.ezorm.rdb.operator.builder.fragments.ddl.CreateIndexSqlBuilder;
 import org.hswebframework.ezorm.rdb.operator.builder.fragments.ddl.CreateTableSqlBuilder;
-import org.hswebframework.ezorm.rdb.supports.mysql.MysqlCreateTableSqlBuilder;
+
+import static org.hswebframework.ezorm.rdb.executor.SqlRequests.of;
 
 /**
  * KingbaseES MySQL 兼容模式的建表 SQL 构建器.
  * <p>
- * 与 {@link MysqlCreateTableSqlBuilder} 的区别：
+ * 与 {@link org.hswebframework.ezorm.rdb.supports.mysql.MysqlCreateTableSqlBuilder} 的区别：
  * <ul>
  *   <li>去掉了 {@code ENGINE=InnoDB DEFAULT CHARSET=utf8mb4} 等 MySQL 特有子句</li>
+ *   <li>comment 使用 PostgreSQL 标准的 {@code COMMENT ON COLUMN/TABLE} 语法，
+ *       而非 MySQL 的内联 {@code comment 'xxx'}</li>
  *   <li>保留了 {@code auto_increment}（KingbaseES MySQL 兼容版支持）</li>
- *   <li>保留了 {@code comment} 语法</li>
  * </ul>
  *
  * @since 4.2
@@ -61,18 +63,21 @@ public SqlRequest build(RDBTableMetadata table) {
                         createTable.addSql("default", ((NativeSql) defaultValue).getSql());
                     }
                 }
-                if (column.getComment() != null) {
-                    createTable.addSql(" comment ",
-                                       StringUtils.concat("'", column.getComment(), "'"));
-                }
+            }
+            // 使用 PostgreSQL 标准的 COMMENT ON COLUMN 语法（作为单独的批量 SQL）
+            if (column.getComment() != null) {
+                sql.addBatch(of(String.format("comment on column %s is '%s'",
+                        column.getFullTableName(), column.getComment())));
             }
         }
 
         // KingbaseES 不支持 ENGINE= 和 DEFAULT CHARSET=，直接关闭括号
         createTable.addSql(")");
 
+        // 使用 PostgreSQL 标准的 COMMENT ON TABLE 语法
         if (table.getComment() != null) {
-            createTable.addSql("COMMENT=", StringUtils.concat("'", table.getComment(), "'"));
+            sql.addBatch(of(String.format("comment on table %s is '%s'",
+                    table.getFullName(), table.getComment())));
         }
 
         sql.setSql(createTable.toRequest().getSql());
diff --git a/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlDialect.java b/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlDialect.java
index 21fdf6a3..c2cdfe3e 100644
--- a/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlDialect.java
+++ b/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlDialect.java
@@ -16,7 +16,7 @@
  * 因此：
  * <ul>
  *   <li>数据类型映射：复用 MySQL 的类型映射</li>
- *   <li>标识符引用：使用双引号（PostgreSQL 风格），因为驱动层是 r2dbc-postgresql</li>
+ *   <li>标识符引用：使用反引号（MySQL 风格），KingbaseES MySQL 兼容模式不支持双引号</li>
  * </ul>
  *
  * @since 4.2
@@ -66,12 +66,12 @@ public KingbaseMysqlDialect() {
 
     @Override
     public String getQuoteStart() {
-        return "\"";
+        return "`";
     }
 
     @Override
     public String getQuoteEnd() {
-        return "\"";
+        return "`";
     }
 
     @Override
diff --git a/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlSchemaMetadata.java b/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlSchemaMetadata.java
index 36f832df..b2d56c61 100644
--- a/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlSchemaMetadata.java
+++ b/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlSchemaMetadata.java
@@ -4,10 +4,10 @@
 import org.hswebframework.ezorm.rdb.metadata.RDBSchemaMetadata;
 import org.hswebframework.ezorm.rdb.metadata.RDBTableMetadata;
 import org.hswebframework.ezorm.rdb.operator.CompositeExceptionTranslation;
-import org.hswebframework.ezorm.rdb.supports.mysql.MysqlAlterTableSqlBuilder;
 import org.hswebframework.ezorm.rdb.supports.mysql.MysqlEnumInFragmentBuilder;
 import org.hswebframework.ezorm.rdb.supports.mysql.MysqlIndexMetadataParser;
 import org.hswebframework.ezorm.rdb.supports.mysql.MysqlPaginator;
+import org.hswebframework.ezorm.rdb.supports.postgres.PostgresqlAlterTableSqlBuilder;
 import org.hswebframework.ezorm.rdb.supports.postgres.PostgresqlR2DBCExceptionTranslation;
 import org.hswebframework.ezorm.rdb.utils.FeatureUtils;
 
@@ -16,11 +16,12 @@
  * <p>
  * KingbaseES 底层使用 PostgreSQL 协议通信，但 SQL 语法兼容 MySQL。因此：
  * <ul>
- *   <li>DDL 构建器：使用 KingbaseES 适配版（去掉 ENGINE=/CHARSET=）</li>
+ *   <li>DDL 构建器：使用 KingbaseES 适配版（去掉 ENGINE=/CHARSET=，COMMENT ON 语法）</li>
+ *   <li>ALTER TABLE：使用 PostgreSQL 风格（避免 MySQL 内联 comment 不兼容问题）</li>
  *   <li>分页器：复用 MySQL 的 LIMIT ?,? 语法</li>
- *   <li>元数据解析器：复用 MySQL information_schema 查询</li>
+ *   <li>元数据解析器：基于 MySQL information_schema 查询，增加 CAST 转换</li>
  *   <li>异常翻译：使用 <b>PostgreSQL</b> 异常翻译（因为驱动层是 r2dbc-postgresql）</li>
- *   <li>方言：使用 {@link KingbaseMysqlDialect}（MySQL 类型映射 + 双引号引用）</li>
+ *   <li>方言：使用 {@link KingbaseMysqlDialect}（MySQL 类型映射 + 反引号引用）</li>
  * </ul>
  *
  * @since 4.2
@@ -30,9 +31,9 @@ public class KingbaseMysqlSchemaMetadata extends RDBSchemaMetadata {
     public KingbaseMysqlSchemaMetadata(String name) {
         super(name);
 
-        // DDL 构建器 - 去掉 ENGINE=/CHARSET=
+        // DDL 构建器 - 去掉 ENGINE=/CHARSET=，使用 COMMENT ON 语法
         addFeature(new KingbaseMysqlCreateTableSqlBuilder());
-        addFeature(new MysqlAlterTableSqlBuilder());
+        addFeature(new PostgresqlAlterTableSqlBuilder());
 
         // 分页器 - 复用 MySQL 的 LIMIT ?,? 语法
         addFeature(new MysqlPaginator());
diff --git a/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlTableMetadataParser.java b/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlTableMetadataParser.java
index 557f8233..f03b3f0c 100644
--- a/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlTableMetadataParser.java
+++ b/hsweb-easy-orm-rdb/src/main/java/org/hswebframework/ezorm/rdb/supports/kingbase/mysql/KingbaseMysqlTableMetadataParser.java
@@ -1,24 +1,81 @@
 package org.hswebframework.ezorm.rdb.supports.kingbase.mysql;
 
 import org.hswebframework.ezorm.rdb.metadata.RDBSchemaMetadata;
-import org.hswebframework.ezorm.rdb.supports.mysql.MysqlTableMetadataParser;
+import org.hswebframework.ezorm.rdb.metadata.RDBTableMetadata;
+import org.hswebframework.ezorm.rdb.supports.commons.RDBTableMetadataParser;
+import reactor.core.publisher.Flux;
+
+import java.util.List;
 
 /**
  * KingbaseES MySQL 兼容模式的表元数据解析器.
  * <p>
- * KingbaseES MySQL 兼容模式的 {@code information_schema.columns} 和
- * {@code information_schema.tables} 与 MySQL 高度兼容，
- * 因此直接继承 {@link MysqlTableMetadataParser}。
- * <p>
- * 如果后续发现字段差异（如 {@code column_type} 不存在等），
- * 可在此类中覆盖对应的 SQL 方法。
+ * 通过 r2dbc-postgresql 驱动查询 information_schema 时，
+ * {@code character_maximum_length}、{@code numeric_precision}、{@code numeric_scale}
+ * 等字段的返回类型为 varchar（而非 int），需要在 SQL 中进行显式 CAST 转换，
+ * 避免 {@code ClassCastException: Cannot cast String to Number}。
  *
  * @since 4.2
  */
-public class KingbaseMysqlTableMetadataParser extends MysqlTableMetadataParser {
+public class KingbaseMysqlTableMetadataParser extends RDBTableMetadataParser {
+
+    private static final String TABLE_META_SQL = String.join(" ",
+            "select",
+            "column_name as `name`,",
+            "data_type as `data_type`,",
+            "cast(character_maximum_length as integer) as `data_length`,",
+            "cast(numeric_precision as integer) as `data_precision`,",
+            "cast(numeric_scale as integer) as `data_scale`,",
+            "column_comment as `comment`,",
+            "table_name as `table_name`,",
+            "column_type as `column_type`,",
+            "case when is_nullable='YES' then 0 else 1 end as `not_null`",
+            "from information_schema.columns where table_schema=#{schema} and table_name like #{table}");
+
+    private static final String TABLE_COMMENT_SQL = String.join(" ",
+            "select ",
+            "table_comment as `comment`",
+            ",table_name as `table_name`",
+            "from information_schema.tables where table_schema=#{schema} and table_name like #{table}");
+
+    private static final String ALL_TABLE_SQL =
+            "select table_name as `name` from information_schema.`TABLES` where table_schema=#{schema}";
+
+    private static final String TABLE_EXISTS_SQL =
+            "select count(1) as `total` from information_schema.`TABLES` where table_schema=#{schema} and table_name=#{table}";
 
     public KingbaseMysqlTableMetadataParser(RDBSchemaMetadata schema) {
         super(schema);
     }
 
+    @Override
+    protected String getTableMetaSql(String name) {
+        return TABLE_META_SQL;
+    }
+
+    @Override
+    protected String getTableCommentSql(String name) {
+        return TABLE_COMMENT_SQL;
+    }
+
+    @Override
+    protected String getAllTableSql() {
+        return ALL_TABLE_SQL;
+    }
+
+    @Override
+    public String getTableExistsSql() {
+        return TABLE_EXISTS_SQL;
+    }
+
+    @Override
+    public List<RDBTableMetadata> parseAll() {
+        return super.fastParseAll();
+    }
+
+    @Override
+    public Flux<RDBTableMetadata> parseAllReactive() {
+        return super.fastParseAllReactive();
+    }
+
 }