Apples contain more pectin, and if they are cleaned and cooked, they can play an antidiarrheal role and promote the growth of beneficial intestinal flora. Pectin is more abundant near the peel, so it is better to cook apples without peeling them, and also supplement with enough hot water to replenish lost fluids. Pay attention to abdominal insulation so as not to aggravate the diarrhea and repeat it because of the cold stomach. Eat more soft and well-digested food, avoid eating cold and stimulating food, and take oral antidiarrheal drugs such as montelukast and drugs to regulate intestinal flora such as bifidobacterium triptans capsules. If the diarrhea does not improve and abdominal pain, fever, severe dehydration and limb sensory disturbance occur, consider the complication of infection and electrolyte disorder, and go to hospital immediately for further treatment.