Vomiting with a bout of stomach pain in a three-year-old child may be related to infection, intestinal obstruction, intussusception and so on. Anti-infection, gastrointestinal decompression, enema and other treatments can be used. 1. Infection: If the three-year-old child vomiting with a bout of pain in the stomach is caused by gastrointestinal infection, parents can give the child some antibiotics under the guidance of the doctor, such as cefixime and so on. After the digestive tract infection is controlled, the child’s symptoms will be reduced. 2. Intestinal obstruction: Intestinal obstruction can also lead to vomiting and paroxysmal abdominal pain. Parents are advised to bring their children to the doctor as soon as possible and relieve the symptoms through gastrointestinal decompression and fasting. 3. intussusception: the child vomiting with a burst of pain in the stomach may also be caused by intussusception, can be reset by enema, if necessary, need surgery. Before determining the cause of the disease, parents are not recommended to give their children antiemetic and analgesic drugs, it is easy to cover up the condition, causing inconvenience to the diagnosis, the need to take the child to the hospital as soon as possible for diagnosis and treatment. The above medications should be used in accordance with medical advice.