Abstract: Personal information right is the right lawfully enjoyed by an information subject concerning his personal information and special personality right which controls and counters the infringements against others. From the semantic study of"domination" and "control", the characteristics of personal information and protection needs, with personal information sharing as the logical starting point and focusing on the analysis of the legal relationship of personal information, the right of personal information should take "control right" as the focal point in order to deduce its extensions, which also includes self-determination, management, licensing, prohibition and interests for the all-round protection of the personal information interests of the personality.