Recently we cannot almost pass a day without watching a word internet on TV or in the magazings; but the history of internet is considerably old and it has passed more than 30 years. The internet (internetworking), as we know from the words "international"or "interstate", meant originally to connect computer network, but at the present time generally it means one particular network connecting the world. We are being surrounded by the internet so rapidly that I would like to describe its historical background, present status, further it′s subjects, future prospect of th internet.