If a child sweats a lot while sleeping, parents should first find the cause of the child’s sweating, because the room temperature is high, or when sleeping covered with thick, these may cause the child to sweat a lot. There is also a possibility that the child is deficient in calcium, because calcium deficiency can also cause the child to sweat a lot, it is advisable to take the child to the hospital to check the trace elements, if it is determined that the child is deficient in calcium, you can usually give the child appropriate calcium supplements, or let the child go out in the sun every day.