Infant diarrhea is a manifestation of infant diarrhea, which can be divided into infectious and non-infectious diarrhea, and the susceptibility factors are as follows: 1. Infants grow and develop particularly rapidly, and their bodies require more nutrients and calories. However, the digestive organs are not fully developed and the digestive enzymes secreted are relatively small. Therefore, the digestive ability is weaker and diarrhea easily occurs; 2. Because of the poor regulation of the gastrointestinal function by the nervous system, a slight change in diet, such as not adapting to added supplementary foods, adding too many kinds for a short time, or feeding too much at a time, sudden weaning, or improper diet, eating protein foods that are not easy to digest, low temperature, the body is cold to speed up intestinal peristalsis, or the day is too hot and the secretion of digestive juices The decrease in the secretion of digestive juices, as well as the difference in temperature in autumn, such as the size of the belly is susceptible to cold, can cause diarrhea; 3, because the immunity of the whole body and the gastrointestinal tract is relatively low, so as long as the food or food utensils are slightly infected, it can cause diarrhea. Babies are prone to respiratory infections because of their low resistance, so when they have a cold, pneumonia, or otitis media, it can also cause diarrhea.