Andrew Feenberg, a new generation Frankfurt School scholar, lives in the age of the Internet. Based on the new theoretical perspective and the background of the time, his cognition on the new communication technology of this period - computer network is very different from the theory of "cultural industry" of the previous generation. Based on the analysis of his research path and theoretical logic, this paper not only clarifes his transformation from "critical technology" to "transformation technology", but also examines his new understanding of communication technology. Through his understanding of the duality of computer technology, he puts forward the "instrumental theory" to explain the computerized rationale in order to reshape the vision of the previous generation of scholars: integrating life experience and value of the world to in?uence the technology (and its technical rules and standards) and so on. Feenberg's view, despite some of the abstraction and lack of suffcient attention to reality, focuses on the logic of life, making the theory of technical criticism turned to practice and experience, and proposed the strategic possibilities ignored by the previous generation of scholars. This not only helps us to fully understand the Frankfurt School, but also provides a new reference framework concerning how to view and use communication technology in the new communication environment.