Boys with long hairy stomachs are considered to be normal physiological phenomena, hirsutism, which can be removed through physical, laser and other methods. 1. Normal physiological phenomenon: after the boys enter puberty, the androgen level in the body will rise, the symptoms of stomach hairy, this is a normal physiological phenomenon, do not need special treatment, if you think it affects the aesthetic appearance, you can remove the physical methods, such as shaving knife or use hair removal cream, etc., if you want to completely remove, you can laser hair removal. 2. Hirsutism: if the stomach hairy boys at birth or early childhood onset, do not rule out the possibility of hirsutism, mainly for the cause of treatment, consider and malignant tumors, endocrine disorders, malnutrition, anorexia nervosa and many other factors, but also through some of the photoelectricity treatment method to improve the symptoms. Boys stomach hair, it is recommended to go to the regular hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.