Androgenetic alopecia, also known as seborrheic alopecia, is a common cause of hair loss in male patients and is related to genetics and androgen levels, with a genetic predisposition. Male patients have high androgen levels, androgens and androgen receptors in hair follicle cells bind to play a corresponding biological role to shrink hair follicles and shorten the hair growth cycle, so that the original thick and black hair gradually becomes slender and easy to fall out, and eventually the hair follicles atrophy and disappear, forming a large area of hair loss in the forehead coronal area and the crown of the head. In addition some irritating factors, such as stimulating diet, staying up late, drinking alcohol, emotional and mental stress, etc., also tend to cause or aggravate this androgenic hair loss.