The main reasons for stomach pain, regurgitation and vomiting include the following: 1. It may be a manifestation of gastrointestinal dyspepsia, due to eating indigestible or unclean food, spasmodic pain in the gastrointestinal tract, even including nausea and vomiting. 2. It may be due to inflammation of the gastrointestinal tract, including acute gastroenteritis, which may lead to vomiting and diarrhea, which is still more common in clinical practice. 3. 3, may be due to food poisoning, including eating unclean food, or uncooked beef, mutton, fatty protein food, should try to take rehydration, vomiting method, can relieve stomach pain.