The U.S. patient privacy law has experienced a long development and evolved into a systematically comprehensive, explicitly unified, and internally coordinated legal framework consisting of Health Insurance Privacy and Accountability Act as the base stone, National Standards for Privacy of Personal Health Information and the other several legislations as specific laws, and Public Health Service Act and the other several legislations as supporting laws. Based on examining and analyzing the U.S. patient privacy law, this article is aimed at putting forward implications for the flaws adhered to Chinese legislation with respect to patient’s right to privacy: a. lack of complete legal framework to protect patient’s right to privacy; b. the scope of information in regard to patient’s privacy is defined too narrowly; c. the absence of legislations governing Electronic Medical Records.