The common causes of diarrhea are: 1, eating too much or too many times, which increases the burden on the gastrointestinal tract; 2, adding supplementary food too quickly or too many varieties of food, or eating too much greasy food with slag, which cannot be completely digested; 3, irregular feeding, the gastrointestinal tract can not form the conditioned reflex of secreting digestive juices at regular intervals, resulting in reduced digestive function; 4, eating food with bacteria, causing gastrointestinal tract infection; 5, suffering from digestive tract 5, suffer from diseases other than digestive tract (such as cold, pneumonia, etc.), which can lead to diarrhea due to digestive disorders; 6, when the ambient temperature is too low or too high, children may also have diarrhea. Infants should do the following things after diarrhea: 1. Do not fast. Infants who eat breast milk should continue to feed as long as the infant wants to eat. Infants who eat cow’s milk can reduce the amount of milk by about 1/3 each time and add some water to the milk slightly. If the baby does not eat enough after the reduction, you can add rice soup with salt or feed carrot water or fresh vegetable water to replenish inorganic salts and vitamins. For infants who have already added supplementary foods such as porridge, the amount of these foods can be reduced slightly. Be sure to feed water according to the infant’s thirst. 2. Early detection of dehydration. When the infant has severe diarrhea, accompanied by vomiting, fever, thirst, dry lips, little or no urine, sunken eye sockets, sunken fontanel, the infant is “thin” in a short period of time, the skin is “wilted”, crying without tears, this indicates that dehydration has been caused, the sick child should be promptly sent to the This indicates that dehydration has been caused, and the sick child should be sent to the hospital for treatment. 3. Prevent dehydration. Use oral rehydration salts to constantly replenish the water and salt lost due to diarrhea and vomiting, dehydration will not occur. 4, do not abuse antibiotics. Many light diarrhea without antibiotics and other anti-inflammatory drug treatment can be self-healing; or take gold double-fold and other micro-ecological preparations, Similac and other water adsorption drugs also quickly healed, especially autumn diarrhea due to viral infections, the application of antibiotic treatment is not only ineffective, but harmful; bacterial dysentery or other bacterial diarrhea, antibiotics can be applied, but must be treated under the guidance of a doctor. 5, parents should carefully observe the nature of the stool, the color, the number of times and the amount of stool. Keep the abnormal part of the stool as a specimen for laboratory tests to find the cause of diarrhea; pay attention to keeping the abdomen warm to reduce intestinal peristalsis; pay attention to letting the baby rest more, wash the buttocks with warm water after defecation to prevent the occurrence of red buttocks, clean the diaper, boil it to disinfect it, and dry it before use.