The head sweating when sleeping can be divided into two categories of causes: 1, physiological head sweating in bed, mainly due to the forehead is rich in blood vessels, large pores and more, sweating can achieve the purpose of lowering body temperature, is the result of the internal thermoregulation center regulation, especially in hot weather or sleep covers too thick will lead to head sweating, belongs to the normal physiological regulation, do not need to worry, through the appropriate reduction of indoor temperature, indoor ventilation, less cover can improve. The actual head sweating is a result of the metabolism of children, which can easily occur when they sleep. 2, pathological head sweating, there are many clinical causes, such as tuberculosis, hyperthyroidism, diabetes, calcium deficiency in children, etc., may lead to head sweating when the patient sleeps, in the treatment should be clearly diagnosed, and then the cause of treatment.