Playing computer games has several disadvantages.Some games are so interesting that quite a few students spend too much time on them. Those students can sit in front of their computers from morning till midnight.They live happily in the world of computer games, missing fun in the real world such as reading books, playing football, traveling and chatting with friends. Besides, the lack of time to study, to rest eyes an to do outdoor exercise cause serious problems to their study and health. Therefore, students, parents and teachers should work together to make a proper plan so that students will not spend too much time playing computer games.