This article discusses legal issues related to paparazzi's infringement of celebrities' privacy. The relationship between celebrities and paparazzi is complicated, celebrities can benefit from the exposure rate given by paparazzi, but paparazzi’s behavior infringes on celebrities’ privacy and even affects personal safety. However, there is no law in the United States that prohibits paparazzi. On the contrary, paparazzi are protected by the First Amendment rights. And, this article uses the Shulman case and the Taus case to analyze the limitations of protecting personal privacy by law and the difficulty of completely banning paparazzi.