There are many reasons for children to start sleeping and sweating in the spring, generally considered physiological reasons, improper parental feeding and care, calcium deficiency and other reasons. 1. Physiological reasons: children’s central nervous system development is not perfect, the autonomic nervous function is not stable, after sleep for some time to dominate the sympathetic excitation of the secretion of sweat glands, leading to dominate the secretion of sweat glands continue to secrete sweat. 2. Improper feeding and care by parents: for example, eating some high-calorie food such as milk and cake before going to bed, doing too much strenuous exercise such as jumping and skipping before going to bed, and covering the child too thickly during bedtime can lead to sweating during sleep. 3. Calcium deficiency: children due to rapid growth and development at a young age, the demand for calcium increases, when the child is deficient in calcium can be manifested as sweating, pillow baldness, irritability and easy to wake up and other manifestations. Need to go to the hospital, a clear diagnosis of the cause of the targeted treatment, you can not just randomly use drugs.