In china recent years economics has been developed quickly，National economy arises at speed of about 17%，the trend have never appeared all over the world。of course，so has Internet in china，nowadays，basically，every student has a computer in university，so thanks to which，there are different opinions of some people。talking about advantage and disadvantages of Internet。

     They thought development of Internet improve national economic development 。benefits of Internet show some reasons。firstly in military and science，Internet can make use of widely，now which are used in GPS of military mostly，next we can face to face communicate with people we want to meet with video chat of internet.finally,we can look for material fast, and view many kinds of things .

    But some people said that ther are disadvantages of internet ,at first ,maybe we had chat too crazily all day to not do significant thing.secondly it is bad for our health to play more internet games,maybe our sight will turned low,what is worse,some people's mood had been  attracted by which,they cared for nothing except inthernet.

  So we should treat with internet correctly,try to make use of its benefits and escape from disadvantage of internet.