Most male patients with chest pain during the youthful period between the ages of 12 and 17 have physiological male breast development and temporary mild breast enlargement, which will gradually disappear as they get older and do not require treatment. A small number of men with chest pain have other organ system diseases, such as pseudohermaphroditism, endocrine gland diseases, male breast cancer, etc. If the chest pain is caused by diseases, the original disease should be actively treated to prevent aggravation.