Acute gastroenteritis usually takes 3 to 5 days to recover, and can last more than a week in long cases. Patients with acute gastroenteritis will have symptoms of loss of appetite and indigestion, which usually lasts for 3~5 days or even more than a week. It is recommended that the patient’s diet is based on light, easily digestible food, avoiding spicy and stimulating food. Wait until the gastrointestinal function is fully recovered, and then slowly return to normal diet. If the patient has recurrent acute gastroenteritis, or gastroenteritis is more serious, he should go to the hospital in time for relevant examinations to clarify the cause of the disease, and under the guidance of the doctor for treatment, which is usually Saccharomyces boulardii, berberine hydrochloride and so on. If the treatment is not timely, delayed condition, serious cases may threaten the patient’s life and health, etc..