M-shaped hair loss is a symptom of androgenetic alopecia, which can be treated by medication, physical therapy and surgery. 1. Medication: Male patients with androgenic alopecia can take oral finasteride tablets and apply 5% minoxidil solution topically as prescribed by the doctor for treatment, while female patients can take oral spironolactone tablets and apply 2% minoxidil solution topically as prescribed by the doctor for treatment. 2. Physical therapy: patients can undergo low-energy laser therapy, through the laser penetrates the skin epidermis, improve the microenvironment of the hair follicle, assist in the treatment of androgenetic alopecia. 3. Surgery: Androgenetic baldness patients can undergo hair transplantation when their hair loss is under control and the hair behind the occipital head is flourishing. Androgenetic baldness patients are advised to consult a doctor in a timely manner, under the guidance of the doctor according to the severity of the condition to standardize the treatment, do not self-medication, in order to avoid adverse reactions.