M-type hair loss is usually caused by excessive androgen production, and oral Finasteride is recommended for treatment. M hair loss is one of the more common hairstyles in male pattern baldness and one of the first to appear. M alopecia is seborrheic alopecia with a receding hairline, which is why it is also called androgenetic alopecia. Characterized by the hairline on both sides of the frontal corner of the hair recedes backward to a certain level, the performance should be for the letter M image. Clinically, hair loss caused by excessive secretion of androgen is very common, due to the imbalance of hormone levels in the body caused by too little estrogen secretion or too much androgen secretion, which can easily cause hair loss. At present, this kind of hair loss can only effectively control the development speed, but can not be completely cured. The most common and useful treatment for androgenetic alopecia is to take Finasteride orally with topical Minoxidil to stimulate hair follicle regeneration, which can effectively alleviate the symptoms of hair loss, and it usually requires continuous medication for 6-12 months or more, and it takes a longer period of time to maintain the efficacy of the medication. It is recommended to consult a dermatologist for targeted treatment under the guidance of a doctor for M-type alopecia.