Clinical patients often have hair loss from both sides of the forehead or from the top, which is clinically known as androgenetic alopecia or male pattern baldness. This is the most common clinical hair loss disorder in which the patient’s local scalp hair follicles become more sensitive to androgens and the follicles gradually atrophy, with the terminal follicles gradually transforming into fine hair follicles until the follicles disappear. Male pattern baldness can have a family history and mainly occurs in men between the ages of 20 and 30. Some patients start the process from both sides of the forehead with decreasing hair density and thinning hair, gradually extending to the top of the head, while others start the above process from the top of the hair, and others start the above process from both the forehead and the top. For the treatment of male pattern baldness, oral medication is currently the most commonly used western clinical medication for finasteride, which can inhibit the transformation of testosterone into dihydrotestosterone and reduce the level of dihydrotestosterone in the serum and scalp, and is the only oral medication approved by the U.S. FDA for the treatment of male androgenetic alopecia, but the treatment requires a long time to take the medication, and there are often some adverse reactions to the sexual function of patients after taking the medication. The use of finasteride for male pattern baldness requires patients to be fully informed before taking the medication. The first choice of topical treatment is minoxidil, minoxidil is the only FDA-approved topical drug for the treatment of androgenetic alopecia, is a non-specific promotion of hair growth, side effects mainly include local irritation reactions, contact allergic reactions and hirsutism, irritation allergic reactions can be stopped in time, hirsutism can gradually return to normal after discontinuation of the drug.