Governments should censor material on the World Wide Web. First, recent web sites are in lawless zone because of its simplicity of making the web sites. For example, adult sites, drug sites, and weapon sites. Especially, the pro-encounter sites present so much on the web site above all. That causes sex crime, violence, and fraud. Recently, there are too much sites on the web site, governments can’t censor all of these though governments have censored these sites. It is said that rounding up all is impossible. In addition, like a well known Japanese anonymous BBS site “ 2 channel”, problems of its anonymousness have been emphasized. Newspapers sometimes report the arrest of writing a crime notice. It is said that important information, company, personal, even classified information exists somewhere on the web site. From these points, Government should censor these unlawful sites to protect our personal information more to say, to keep our country.