Boys with thin limbs but big stomachs may be related to physiological factors such as alcohol consumption, poor eating habits and pathological factors such as Cushing’s syndrome. You need to improve your lifestyle or take medication to regulate it. 1. Physiological factors: the common physiological factors for boys with thin limbs and large stomachs include drinking, overeating, irregular diet and abdominal fat accumulation due to lack of exercise. Such factors need to actively adjust the daily habits, daily exercise for an hour, more light, easy to digest food is the main, avoid smoking and alcohol. 2. Pathological factors: A very thin limb and a big stomach are typical manifestations of Cushing’s syndrome. Cushing’s syndrome patients will appear sex hormone levels, sugar metabolism level abnormalities, and the emergence of abdominal obesity and other manifestations. Usually can be given steroid synthesizer ketoconazole to inhibit the synthesis of cortisol, reduce the concentration of glucocorticoids; serious patients can be carried out in the lesion area of the tumor resection. The boy’s limbs are very thin stomach is very big symptoms are not relieved, or accompanied by other symptoms, should promptly go to the hospital, clear reasons for the targeted treatment.