With the development of marketization of data elements, privacy computing arises at the right moment in order to solve the contradiction between data circulation and its security risks. It is widely used in financial market, medical service, government management and other scenarios. It provides a new way for the identification of personal data rights, subject self-determination, safe circulation and corporate compliance, but also brings new challenges. From the perspective of the path and application scenarios of the key technologies of privacy computing technology, we can find the problems of personal data protection put forward by the current technology; privacy computing technology still has security risks in the process of data processing, and its industrial business model limits the benefits of individuals to their own data. Meanwhile, laws and regulations related to this technology also need to be refined and implemented. In order to solve these problems, it is necessary to promote the optimization of key technologies and the formulation of standards, build self-discipline rules and associations of the industry, strengthen legislation and special supervision of personal data, and build a global governance framework for the protection of personal data rights in privacy computing. It can enhance the use value of data, promote the integration of data resources and international circulation and sharing under the condition that the rights of personal data are fully protected.