Nowadays, computer has been part of our life, we use computer to study, to work and to communicate with our friends. As people count on the network so much and they are free of everything, so they just do whatever they want. Network provides people the new stage to show violence, they are rude and give the bad comment to other people. We call it language violence. Especially for the celebrities, they have been attacked by the rude words all the time. A famous female star from Korea committed suicide because of the network violence. The government took some actions to supervise the network and the users must be registered with their real names. It worked and language violence has been controlled in some way. We need to behave ourselves even without the supervision of law.