Boys sweaty hands and feet have physiological factors and pathological factors, pathological factors are mainly related to hyperhidrosis, hyperhidrosis has a primary hyperhidrosis and secondary hyperhidrosis two kinds of hyperhidrosis, primary hyperhidrosis and hereditary, secondary hyperhidrosis causes include disease factors, medication factors, and psychiatric factors and so on. 1. Physiological factors: Normal people in excessive sweating, visible in sports, high temperature environment, emotional excitement and spicy food and other physiological state, can appear in the phenomenon of sweaty hands and feet, usually will be relieved, no need for treatment. 2. Hyperhidrosis (1) primary hyperhidrosis: the cause of this disease is unknown, mostly related to genetic factors. (2) secondary hyperhidrosis: if there are infectious febrile diseases, such as tuberculosis, malaria, etc.; metabolic, endocrine diseases, such as hyperthyroidism, hyperadrenalism, rickets, etc.; taking certain drugs, such as antipyretic and analgesic, cholinergic drugs, etc.; fear, anxiety, nervousness, and other psychiatric factors, etc., can be triggered by the production of hyperhidrosis. It is recommended that patients who suspect that the disease is caused by, timely to the regular hospital dermatology consultation, follow the doctor’s instructions to clarify the diagnosis, reasonable treatment.