系统本身不具备自动清理注册表的功能，注册表随着使用时间的增加，也会逐渐留下很多LJ信息，还是推荐用第三方软件定时清理。但是要注意软件功能再强也会有失误的时候，最好在每次清理前备份注册表。
这里给大家推荐一个工具：EasyCleaner 2.0.6.380
英文好的可以去官方网站看介绍：
http://personal.inet.fi/business/toniarts/ecleane.htm （安装版约3.0M，绿色版约1.8M）
EasyCleaner is a small program which searches the Windows registry for entries that are pointing nowhere. EasyCleaner also lets you delete all kinds of unnecessary files such as temps and backups. You can search for duplicate files and you can view some interesting info about your disk space usage! You are also able to manage startup programs, invalid shortcuts and add/remove software list. ToniArts may not be held accountable in any way if EasyCleaner affects your computer in a negative way. List of some features:Very nice interface!
Finds invalid registry entries ----> deleting them speeds up your computer!
Finds duplicate files ----> deleting them will free disk space!
Finds all unnecessary files like backups, temps etc. ----> deleting them will free disk space!
Finds all invalid shortcuts ----> deleting them will free disk space and increase usability!
Manage programs starting at Windows startup! ----> who knows, you might even catch a virus before it gets serious!
Manage Windows add/remove software listing!
Easily remove Internet Explorer's temporary Internet files, history and cookies!
Very user friendly! Shows some interesting info about your disk space usage.
Very customizable.
Multi-language support!
Uses only little amount of recources while running!
Huge help file which gives you every little detail about EasyCleaner!
And much more...
下载地址：下载地址：点击下载
这个芬兰人设计的 EasyCleaner 比较热门，而且很多人说不错。内置多语言版包括简体中文、
繁体中文、日语、英语、欧洲语言，集成了清理注册表、删除程序、清理磁盘废文件、查看文件
占用磁盘情况等。
注意：1，对注册表进行操作前，建议先备份（或建立系统还原点）。
2，对所进行的操作足够了解之后再进行（防止误删）。
刚用过，功能很齐全的，确实不错，忍不住就发贴了。它也不用注册码也不给你的电脑捆绑任何
插件，没有副作用，难得哦。
有不少朋友疑问是不是真的是微软工程师推荐的，请到微软中文社区查看，那是05－03－04推荐
的，那时候还没有中文简体版本，现在有了。不信者请到：
http://bbs.mscommunity.com/forums/default.aspx 一看便知。
这里给大家推荐一个工具：EasyCleaner 2.0.6.380
英文好的可以去官方网站看介绍：
http://personal.inet.fi/business/toniarts/ecleane.htm （安装版约3.0M，绿色版约1.8M）
EasyCleaner is a small program which searches the Windows registry for entries that are pointing nowhere. EasyCleaner also lets you delete all kinds of unnecessary files such as temps and backups. You can search for duplicate files and you can view some interesting info about your disk space usage! You are also able to manage startup programs, invalid shortcuts and add/remove software list. ToniArts may not be held accountable in any way if EasyCleaner affects your computer in a negative way. List of some features:Very nice interface!
Finds invalid registry entries ----> deleting them speeds up your computer!
Finds duplicate files ----> deleting them will free disk space!
Finds all unnecessary files like backups, temps etc. ----> deleting them will free disk space!
Finds all invalid shortcuts ----> deleting them will free disk space and increase usability!
Manage programs starting at Windows startup! ----> who knows, you might even catch a virus before it gets serious!
Manage Windows add/remove software listing!
Easily remove Internet Explorer's temporary Internet files, history and cookies!
Very user friendly! Shows some interesting info about your disk space usage.
Very customizable.
Multi-language support!
Uses only little amount of recources while running!
Huge help file which gives you every little detail about EasyCleaner!
And much more...
下载地址：下载地址：点击下载
这个芬兰人设计的 EasyCleaner 比较热门，而且很多人说不错。内置多语言版包括简体中文、
繁体中文、日语、英语、欧洲语言，集成了清理注册表、删除程序、清理磁盘废文件、查看文件
占用磁盘情况等。
注意：1，对注册表进行操作前，建议先备份（或建立系统还原点）。
2，对所进行的操作足够了解之后再进行（防止误删）。
刚用过，功能很齐全的，确实不错，忍不住就发贴了。它也不用注册码也不给你的电脑捆绑任何
插件，没有副作用，难得哦。
有不少朋友疑问是不是真的是微软工程师推荐的，请到微软中文社区查看，那是05－03－04推荐
的，那时候还没有中文简体版本，现在有了。不信者请到：
http://bbs.mscommunity.com/forums/default.aspx 一看便知。