Personal information protection has emerged as a critical issue in the digital era. To gain a comprehensive understanding of its research landscape and developmental trajectories, this study utilizes the CNKI database as its data source and employs the CiteSpace tool to construct a knowledge mapping in this field. Through bibliometric analysis, it examines both the strengths and limitations of existing research conducted by domestic scholars. Furthermore, based on the tripartite classification of public data, corporate data, and personal data, the study proposes targeted legal countermeasures accordingly.