There are many causes of diarrhea, including bacterial infection and indigestion. It can be treated by general treatment such as eating easy-to-digest food, taking medication such as norfloxacin and polypeptide tablets. 1. Patients with diarrhea should consult a doctor in time, provide a detailed medical history to the doctor, and improve the examination of fecal routine, blood routine, abdominal ultrasound, abdominal CT and so on, so as to clarify the cause of diarrhea. 2. General treatment: Eat easy-to-digest food, such as rice soup, thin noodles, etc.; avoid high-fat, cold, spicy and other stimulating foods. 3. Medication: If the acute diarrhea is severe, oral rehydration salts can be given to prevent dehydration; if it is bacterial infection, sensitive antibiotics such as norfloxacin can be given; if it is dyspepsia, digestive aids such as polypeptide tablets can be given; if it is a large amount of watery diarrhea, intravenous rehydration can be given. The above drugs are prohibited for those who are allergic to them and should be taken according to the doctor’s instructions. If the patient’s diarrhea symptoms are serious, or continue to see no improvement, it is recommended to go to the regular hospital in a timely manner, to clarify the cause of the disease, under the guidance of the doctor for targeted treatment.