The baby’s head sweating may be related to environmental factors, calcium deficiency, upper respiratory tract infections and so on. 1. Environmental factors: the baby is still small, the central body temperature system is not well developed, the body temperature is easily affected by the environment, if the baby is in a high temperature environment, the phenomenon of head sweating. 2. Calcium deficiency: may also be related to the baby’s calcium deficiency, calcium deficiency can also cause excessive sweating, may also be accompanied by sleep, crying, square skull and other symptoms. 3. upper respiratory tract infection: baby suffers from respiratory tract infection, during the illness will also be weak, can appear head sweating symptoms. The baby’s head sweat may also have other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor’s treatment.