The baby should be caused by calcium deficiency. It's time to supplement calcium. If the child sweats a lot when he falls asleep at night, it will be accompanied by symptoms such as irritability, restless sleep, easy to wake up, square skull, bald pillow and chicken breast. This is a symptom of calcium deficiency. In this case, it is necessary to give the baby cod liver oil and calcium, and usually take the baby outdoors to bask in the sun.