The causes of hair loss in men are the following: 1, work pressure, long-term late night, so that the head blood circulation slowed down, nutrients can not supply the hair growth required and lead to hair loss, the need to maintain adequate sleep, relieve work pressure, you can use a comb to lightly comb the scalp every day to promote blood circulation in the head, can improve the symptoms of hair loss. 2, some scalp diseases caused by hair loss, hair loss is scarring, such as lupus The actual hair loss is a result of the scars, such as lupus alopecia, once the hair falls out, it is difficult to grow out again, you need to go to the hospital to do scalp hair transplant surgery. 3, due to excessive scalp oil secretion, follicle pore blockage, genetic factors and seborrheic alopecia, oral cystine tablets, vitamin B6 or finasteride treatment, pay attention to fried food do not eat, strong tea, coffee do not drink, use sulfur soap or Kang Wang shampoo, there is a role of oil control sterilization is conducive to the recovery of the disease.