As an inevitable product of the development of digital capitalism, private information attached to an individual’s physical body has become a commodity with property value, circulating in bilateral exchange markets in the form of legitimate labor. Different from the accidental transaction in the traditional media stage, the privacy transaction in the digital society has the commoditized form of collection mining and sharing proliferation and the self-commoditized form of privacy disclosure, thus forming a bidirectional coupling privacy commoditization mechanism. Among them, the dispute over ownership of users' private data and the imbalance between costs and benefits in privacy disclosure have become prominent contradictions in the bidirectional commercialization of privacy, resulting in privacy transactions becoming an unavoidable social anxiety and group risk. Privacy is a symbol of the social identity of human beings, and only by incorporating a commoditized mechanism of privacy concerns and data compatibility can individuals protect their privacy from falling into the predicament of zero privacy.