In the era of big data, there are frequent incidents of stakeholder infringement on personal information rights and interests, and civil private interest litigation cannot solve the problem of largescale infringement. Procuratorial civil public interest litigation system has become a new way to protect personal information. At present, although personal information protection procuratorial civil public interest litigation has made some achievements, the relevant system and norms in this field are too principled. Moreover, there are no clear provisions on the application conditions and legal liability, which is difficult to guide judicial practice.There are difficulties such as difficult to define the damage requirements,and inflexible investigation and collection of evidence. It is necessary to strengthen the investigation and verification power of procuratorial organs, clarify the damage compensation liability of the infringer, establish a personal information protection cooperation mechanism with relevant administrative organs, and explore punitive compensation for public interest litigation of procuratorial organs in the field of personal information protection, aiming to prevent related crimes with deterrent function.