The Internet is a tool closely related to people’s life in modern society, and it brings a lot of harm to people invisibly. There is a lot of pornographic and violent content on the Internet. Internet pornography provides a lot of pornographic pictures and words, and many of them promote various abnormal sexual behaviours, such as sexual perversion, pedophilia, incest and so on. Whether people actively seek or passively receive such information, it will have an impact on people’s formation of correct sexual concepts and behaviours. The long-term acceptance of these deformed and wrong information will have a destructive impact on the shaping and development of human physical and mental health.