Child pornography on the internet has become a new and ,serious form of child sexual exploitation. In the past four years, ,international society has tried hard to curb this epidemic, and ,various resolutions and consensus have been reached. In the United ,States, the issue of whether prohibition on virtual child ,pornography violates freedom of speech has been settled by the ,Supreme Court and later the Congress. In the United Kingdom, the ,problem is related to the sentencing of the offense involving child ,pornography. This essay discusses the development of the laws ,regarding the regulation of child pornography on the internet in ,international society, the United States as well as the United ,Kingdom. In addition, Taiwan's relevant laws enforcement efforts ,are also reviewed.