Article 70 of the Personal Information Protection Law provides a clear basis for public interest litigation on the protection of personal information at the legislative level. By analyzing the existing practice samples of public interest litigation on the protection of personal information, there are still some problems in the initial application. In terms of type application, reduce the dependence on criminal cases. In terms of standard identification, the characteristics of atypical public interest litigation such as large number, clear subject and small amount are taken into comprehensive consideration. In terms of legal norms, the existing provisions should be refined to reduce the stereotyped application of traditional public interest litigation in terms of litigation procedures, plaintiff qualification, threshold of prosecution and litigation request.