Babies who sleep with a lot of sweat and wet pillows may be related to high indoor temperatures and thick blankets. Remove these external factors, the baby’s own metabolism, and the thermoregulatory center is not yet well developed, need to regulate their own body temperature through a lot of sweating, and the whole body’s sweat pores are not yet well developed, only through the head of the sweat pores to sweat. Children fall asleep sweating, an hour or so disappear, belong to physiological sweating. If the baby is sweating all night is night sweating, belong to pathological sweating, if accompanied by pillow baldness, sleep at night, love night crying, easy to wake up and other symptoms, consider the child is a lack of vitamin D or calcium deficiency, you should take the baby to the hospital to do micronutrient testing, and timely supplementation of micronutrients.