Abstract: Membrane separation process is a new type of chemical unit operation， and high-efficiency and low-cost separation of substances and molecules can be achieved under mild and low-cost conditions. Reengineering separation process with membrane material as "chip" can achieve "short flow" of separation process， which has become one of the key research directions of chemical engineering. In this paper， through summarizing the research and exploration of the application of membrane technology in the separation process of oil-water system of traditional Chinese medicine for more than 10 years， facing the green development of traditional Chinese medicine industry， it is proposed that the key to realize "using" materials and "optimizing" materials is to create new membrane materials through the combination of basic research and applied research. Therefore， applying the innovative achievements of multi-scale science to reveal the separation principle of membrane process effectively， utilizing the characteristics of "high efficiency， energy saving and consumption reduction" of membrane technology to realize energy saving and emission reduction in the production process of volatile oil of traditional Chinese medicine， and constructing a new separation process， separation process and its exclusive equipment with membrane separation technology as the core will surely be the updating and emerging of the key technologies of traditional industries. The R&D of key technologies in industry provides sustained support and leadership.