Acute abdominal pain and diarrhea, most commonly due to acute gastroenteritis after eating an unclean diet, are also associated with fever, nausea and vomiting. In the early stages, oral anti-infective medications can be administered, including beta-lactam antibiotics and quinolone antibacterials for adults, most commonly levofloxacin tablets. Patients with significant abdominal pain can also apply pain-relieving or cramp-relieving medications and appropriate fluid supplementation. In severe cases, intravenous anti-infection and intravenous rehydration should be administered to correct internal environmental disturbances and prevent complications related to ionic imbalance. At the same time, it is important to stay away from stimulating foods and spicy foods to avoid aggravating the symptoms of gastrointestinal pain.