1, promote breastfeeding, avoid weaning in the summer, change the type of diet. Add complementary foods at the right time and in the right amount, feed reasonably, do not be too full of milk food, do not enter the indigestible food. 2. Wash your hands regularly: pay attention to food hygiene, wash your hands before and after meals, and disinfect food utensils. 3, pay attention to climate change, add and remove clothes and blankets in time to avoid heat or cold. 4.Do a good job of isolation treatment and fecal disinfection of diarrhea patients. 5.Avoid long-term abuse of antibiotics to prevent enteritis caused by dysbiosis. 6.The air in the sick room should be fresh and circulating, and the temperature should be appropriate. 7, pay attention to disinfection and isolation of children with infectious diarrhea. 8.Control diet, reduce milk food appropriately, frequent vomiting should be fasted for 8-12 hours, and gradually resume a small amount of easily digestible food as the condition improves. After the initial healing, attention should be paid to the regulation of diet.