Abstract: Because of the application of the digital technology, we are facing the new challenge in protecting and managing copyright in an electronic environment. We can no longer solve this problem merely resorting to law. The final solution to this challenge of technical progress lies in technology itself. In order to better protect copyright, pe opleapply various technical measures. In this situation we must try to design a sound system of protecting copyright, including electricgun, technical countermeasures and anti-circumvention technology.

Key words: copyright protection, technical measure, anti-circumvention technology