The right to know stipulated in China’s Personal Information Protection Law has differentmanifestations in different stages of information processing. The obligation to inform the data processorprior to the processing of the information is manifested and the right to consult and reproduce during theprocessing of the information. In addition, it is also embodied in the complementary right - the right tointerpret rules. Understanding the relevant provisions on the right to know is of great significance to theprotection of Personal Data Subjects’ personal information interests. This article will explain the right toknow enjoyed by individuals in the PIPL by explaining the legal status, subject, and object of the right toknow, as well as the different expressions of the right to know in different laws.