There are many reasons why young children vomit, such as gastritis, peptic ulcer, etc., can cause young children to vomit, vomiting methods are mainly dietary adjustments and medication. 1. Gastritis: including acute and chronic gastritis, mainly caused by a variety of physical, chemical and biological harmful factors in the gastric mucosa or gastric wall inflammatory changes, can lead to nausea, vomiting, abdominal distension, abdominal pain, loss of appetite and other adverse reactions. For acute gastritis, first of all, pay attention to the removal of the cause of the disease, avoid taking all stimulating food or drugs, can be appropriate to use cimetidine and other drugs to inhibit gastric acid secretion, temporary fasting, can be appropriate to use vitamin B ₆ antiemetic. Chronic gastritis is mainly to develop good dietary and living habits, avoiding the intake of irritating food. Secondly, you can use mucosal protective agents such as aluminum sulfate for treatment, and there are drugs that inhibit gastric acid such as ranitidine. 2. Peptic ulcer: refers to chronic ulcers occurring in the stomach and duodenum, infants and young children are mostly acute and secondary ulcers, which can lead to vomiting after eating, intermittent abdominal pain and other uncomfortable symptoms. It can be treated with drugs that inhibit stomach acid, such as cimetidine. Electrolyte disorders caused by severe vomiting require rehydration. Vomiting in young children may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to determine the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment, the above medication as prescribed by the doctor.