Children with stomach pain, vomiting and fever should usually consider the following conditions: 1st, the most common is a viral infection, especially acute gastroenteritis caused by an intestinal viral infection, which can present the above symptoms. 2nd, if the child has a history of unclean diet or is in the midst of an acute illness, it is easy for bacterial infection to cause acute gastroenteritis, resulting in stomach pain, vomiting, and fever. Some children have acute appendicitis, cholecystitis or pancreatitis, which can also cause vomiting, stomach pain and fever. In addition to stomach pain, vomiting and fever, some children should also be aware of intracranial infections, such as viral encephalitis and septic meningoencephalitis, if they have poor mental health and vomiting, especially jet vomiting.