Boys do not grow a beard, part of the phenomenon may be normal, but may also belong to the abnormal, it is recommended to consult a doctor, as soon as possible to seek medical examination. Under normal circumstances, the beard belongs to the second male characteristics, most men in the role of androgen is long beard, if there is no beard growth, may belong to the abnormal, may be due to androgen secretion due to insufficient. In addition, it may also be due to the cleaning is not in place to cause follicle blockage, resulting in the beard can not grow, there is no beard situation. Part of the male androgen normal, all aspects of the body functions are not abnormal, may be due to genetic reasons, manifested in the beard less, or even do not grow a beard, therefore, some men do not grow a beard, may also belong to the normal phenomenon. Men do not grow a beard is not necessarily an abnormal situation, but also need to consult a doctor in time for relevant examinations, to clarify whether the androgen is abnormal, whether the receptor is lacking, etc., if there are abnormalities, should follow the doctor’s instructions to carry out symptomatic treatment, to avoid misunderstanding the condition.