The main ingredient of the antiemetic injection is metoclopramide, which has a powerful central antiemetic effect. It is used to treat nausea and vomiting. It enhances gastric and esophageal peristalsis and promotes gastric emptying. If a child has severe symptoms of vomiting, pay attention to the presence of inappropriate food, and should be reasonably examined and treated to determine whether it is a viral or bacterial infection, and should promptly go to the hospital for basic diagnosis and treatment by means of blood tests. If the child has severe vomiting symptoms, he or she can choose to take oral antibiotics to treat the disease. The side effects of antiemetic injection may appear thirst, irritability, nausea, diarrhea, dizziness and other symptoms, do not worry too much after a period of time slowly side effects will slowly reduce or improve. Antiemetic injections rarely have adverse effects on children. If some children have severe vomiting symptoms and are not able to eat normally, they can be treated by using antiemetic injections to avoid the progress of the disease, which can effectively relieve the condition. The causes of vomiting are complex and the use of antiemetic injections is not recommended in cases where the cause is unknown.