In the pathophysiology of human diseases, some diseases are caused by the reduction of the expression of proteins with specific functions in the body, and the disruption of their normal physiological balance. By using genetic engineering technology to prepare a large number of target proteins in a controllable environment and use them in patients, we can quickly and efficiently adjust the physiological environment of patients and achieve the effect of curing symptoms. The emergence of new technologies has created a new industry. Since the 1980s, hundreds of biotechnology companies have been established in commercial research and development.