Electronic devices bring us convenience while also causing many negative effect to our daily life. Every day we touch with electronic products, some more electronic products as the best friend, every day are indulged in electronic products, and abandoned their studies.To many classmates and friends around us, they spend almost all of their spare time on the computer or mobile phone, take our dormitory, for instance, in the first half due to have not bring the computer, also from time to time between our dormitory of the six people talk, talk.But this semester, six men rarely chat, take on Sunday on Saturday, for instance, from morning till night almost everyone are playing with their computers, they prefer to use QQ chat, also won't have too much communication with roommate.If broken network outage one day, I think many people will feel boring, feel nothing to do, because they spend too much time in the virtual society,Thus ignoring the communication with the realistic society of people, many people unknowingly grim-faced, indifference, and slowly the normal communication between the people is also less, which will produce many mental and physical diseases.