The public interest litigation system of personal biometric information is based on the publicity of information. This system can effectively balance the unequal relationship between information handlers and information individuals, the internal tension between public power and private rights, thereby having the information protection superiority. Article 70 of the personal information protection law provides a legal basis for the public interest litigation system of personal biometric information, however, there are still some problems in the application, such as the lack of concrete application conditions, the difficulty in determining the order of the subject of prosecution, the unreasonable distribution of the burden of proof, and the unclearness of the relationship between different public interest litigation, etc. To ensure that the system of public interest litigation for personal biometric identification information can be effectively implemented in practice, it is necessary to detail the application conditions, clarify the order of litigants, distribute the burden of proof fairly, and clarify the relationship between different types of information public interest litigation. In this vein, the interests of information subjects are balanced, and the information public security are maintained accordingly.