Chloral hydrate is generally not harmful to children’s body when used regularly under the guidance of a doctor, but long-term, high-dose use may be harmful to children’s digestive tract, heart, liver and kidney, skin, nerves and other systems. Specific analysis is as follows: 1. Digestive tract symptoms:Chloral hydrate solution has a certain stimulating effect on the gastric mucosa, which may lead to nausea and vomiting in children. 2. Heart:If chloral hydrate solution is used for a long time, it will inhibit myocardial contractility and shorten the cardiac oprtention period, which will lead to weak heart beat and may lead to heart failure. 3.Hepatorenal toxicity:Chloral hydrate solution can cause some damage to the liver and kidneys. Recovery from overdose produces transient jaundice or (and) proteinuria. 4.Skin:There may be damage to the skin with erythematous urticaria or purpura-like rash and itching. 5. Nervous system:May inhibit the central nervous system and vasomotor center, long-term use may produce drug addiction, dependence. In the use of this drug in children should strictly follow the doctor’s instructions, pay attention to the use of safe doses, avoid long-term application of large quantities, otherwise it may lead to acute poisoning, and produce addiction and dependence.