去mysql官网，找到downloads 点击（如图） 然后在弹出页面中间的下面找到
MySQL Community Server 下面一点就是几个版本的链接
Current Release (Recommended) //推荐版本
MySQL 5.1—Generally Available (GA) release for production use
Beta Releases
MySQL 5.4—Beta
Upcoming Releases
Snapshots — source code snapshots of the development trees
Glassfish+MySQL bundle — developers edition
Older Releases //老版本
MySQL 5.0 — Previous GA release
MySQL 4.1 — Previous GA release
Archives of Older Releases
