If a child overdoses, he or she will show the following clinical signs: first, no particular symptoms. If the overdose in children is very small, children do not have any symptoms and only need dynamic observation. Secondly, the symptoms of the digestive tract. Because the medicine is absorbed through the digestive tract, it is often manifested as digestive discomfort symptoms, such as vomiting, abdominal pain, diarrhea and so on. Again, manifested as liver and kidney function damage. Because most of the drugs have to be metabolized through the liver and kidneys, too large a dose of drugs can cause liver and kidney function damage. Finally, it will also be manifested in the action of the drug reaction, if children take antihypertensive drugs, after the drug overdose will cause a significantly lower blood pressure.