We often encounter parents complaining that their children sweat after sleep, and even if the weather is not hot, they sweat a lot, and some even reach the level of profuse sweating. After clinical observation. Most of the sweating in these children is physiological sweating, and there is no organic disease. Most of them are seen in preschool children aged 3-7 years. The sweating often improves after 2-3 hours of sleep, without other symptoms such as fever or cough, and all tests are often normal. Pediatric sleep hyperhidrosis may be related to the following factors: a. The central nervous system of children is not well developed, the plant nerve function is unstable, and the sympathetic excitation that governs sweat gland secretion dominates for a period of time after sleep. Second, the rapid growth and development of children, high metabolism, high daytime activity, more body heat accumulation, after sleep to distribute the accumulated heat, there may be a period of sweating. Children who sweat a lot during sleep should change their sweaty underwear, pillowcases and blankets in time to avoid catching cold and flu. Avoid strenuous activities during the day, and control the amount of activity of the child appropriately. The child should have a regular life and avoid emotional stress and excitement. When you sweat a lot, you have to replenish water in time, and add the right amount of salt to boiled water to prevent hypertonic water loss in children. You can try a decoction of glutinous rice root, floating wheat, dried peach and other traditional Chinese medicines, or take Chinese medicines such as clear body drink punch. Drugs that regulate plant nerve function such as various vitamins are also effective. The prognosis for pediatric sleep hyperhidrosis is good, and most of the symptoms can gradually disappear with age. However, it is necessary to be examined by a physician to exclude pathological hyperhidrosis such as rickets, rheumatic fever and tuberculosis during activity.