Traditional social and cultural customs tend to be conservative, and the right to disseminate pornographic information is generally discussed under the normative framework of protecting freedom of expression. In the internet era, countries generally adopt a criminal law normative framework to prohibit the dissemination of child pornography. This paper analyzes other countries’ regulations, especially those in the UK and the US where a more mature regulatory system has been established, and thereby proposes that preventive monitoring of the dissemination of child pornography should be carried out. Child pornographic images, videos and audio can be classified into ten levels, which will help for law enforcement agencies and courts monitor and determine criminal behaviors, so as to prevent and reduce the harm to children. The United Nations’ Convention on the Rights of the Child is the legal cornerstone for countries to cooperate in combating the dissemination of child pornography on the internet, and China should timely amend relevant laws to provide more comprehensive protection for children in the cyberspace.