Sweating on the head so that the hair wet may be hot weather, strenuous exercise or nervousness and other physiological reasons, there may be various system lesions, such as diabetes, pheochromocytoma, etc., very complicated, should be mainly from the medical history and clinical manifestations to consider, timely hospital consultation, through auxiliary examination to help determine the cause, and active treatment: a. Physiological factors 1, diet: eat spicy, hot food, stimulate the body sweating, head and face sweat gland secretion. The head and face are rich in sweat glands, so it is easy to show the head sweat, so that the hair wet; 2, exercise: strenuous exercise can accelerate the basal metabolism, the body temperature, promote sweat gland secretion to take away excess heat; 3, mental: sympathetic excitement when nervous, can often cause sweating head and face and palms and other parts, also known as mental sweating. The pathological factors: 1, primary hyperhidrosis: related to genetic factors, the pathogenesis is still unclear, manifested as unexplained sweating in the armpits, hands and feet, head and face, etc.; 2, secondary hyperhidrosis: mostly related to certain diseases or the application of specific drugs. The manifestation of easy head sweating only can be seen in gustatory sweating syndrome, which mostly develops after parotid gland surgery and is caused by local nerve injury, and can manifest as symptoms such as transient sweating, flushing and abnormal sensation of the skin near the ipsilateral preauricular temporal area when eating. In addition, it may be a somatic disease of various other systems, usually not only excessive sweating on the head, but also generalized excessive sweating, such as diabetes, hyperthyroidism, vitamin deficiency, Parkinson’s disease, spinal cord injury, cerebrovascular disease, pheochromocytoma, insulinoma, carcinoid syndrome, acromegaly, and drug toxicity.