Children’s stomach pain and vomiting are considered to be caused by gastrointestinal spasm, acute gastroenteritis, food poisoning, acute abdomen, etc. They need to go to the hospital for examination and treatment after clarifying the causes. 1. Gastrointestinal spasm: mostly caused by eating cold, indigestible food or overeating, can be manifested as sudden, paroxysmal, intermittent abdominal pain and vomiting. In mild cases, hot compresses can be applied or antispasmodic herbs such as chamomile, vervain, licorice, etc. In severe cases, dicyclomine hydrochloride, cetrimonium bromide and other medications should be administered as prescribed by the doctor. 2, acute gastroenteritis: mostly caused by eating unclean food containing bacteria or viruses, germs can stimulate the peristalsis of the gastrointestinal tract, resulting in vomiting, abdominal pain and other symptoms, sometimes accompanied by diarrhea. Severe cases can be treated with sensitive antibiotics, such as penicillin, and if vomiting is serious, water and electrolytes need to be replenished in a timely manner; 3, food poisoning: a history of unclean food, mostly manifested as nausea, vomiting, abdominal pain, diarrhea and other symptoms, the need to take suspicious food, vomit and feces for bacterial culture, serious cases need to do blood culture to clarify the type of bacteria. Treatment, abdominal pain need to follow the doctor’s advice to oral bromoprimide tylenol or subcutaneous injection of atropine, while oral or intravenous rehydration; 4, acute abdominal disease: stomach pain is severe, unbearable, and vomit, need to be alert to acute abdominal disease, including pediatric appendicitis, intestinal entrapment, intestinal torsion, intestinal obstruction, cholecystitis, gallstones and other diseases. If intestinal obstruction is diagnosed, gastrointestinal decompression can be used in mild cases, while surgery is required in severe cases. If it is primary intussusception, air or barium enema can be applied to reset it, if it cannot be reset or other types of intussusception, it can be treated surgically. Children with stomach pain and vomiting need to be closely monitored for dehydration and consciousness, and if abnormalities are found, the doctor should be informed promptly. A light diet is needed, and attention should be paid to dietary hygiene.