1959, American cosmetic surgeon Orentreich described perforation transplantation, published the principle and surgical method of modern hair transplantation for the first time in the west, and pointed out that the advantage of transplantation donor area is that the transplanted embryo (retrooccipital hair follicle) still maintains its continuous growth characteristics when it is transferred to other parts. A hair transplant suitable for treating male baldness was created. This "permanent" hair redistribution, as well as scalp relaxation and flap transfer, is the basis of all hair replacement operations. In this way, modern records about hair transplantation have a history of at least 60 years. After more than 30 years of continuous development, improvement and perfection, the transplanted hair really continues to grow like the original hair without atrophy, degeneration and necrosis. Autologous hair transplantation and regeneration surgery has become a safe and reliable cosmetic surgery method, which can fundamentally solve the problems of baldness and alopecia. In the early 1990s, hair follicle transplantation not only greatly improved the survival rate of transplanted hair, but also made the transplanted hair grow naturally. This new transplantation method, which combines Microsraft and Minigragt, has been widely popularized, and hair transplantation has entered a new stage.