The copyright system which is currently in effect has encountered enormous challenge, with the development of Internet. The original copyright system doesn't fit in with the development of Internet. Only if is properly adjusted and renewed can it be adopted to the current situation. Nowadays, the copyright of the works on net is facing unprecedented menace. It is quite urgent that the right of the copyright owner be protected. In order to keep balance of the site, the author and the netizen, it is necessary that the current situation be studied, that the original legislation and judicature be perfected, and that the contradiction between the protection of the copyright of the works on net and the fluency of information communication be solved.