Infants pulling and vomiting are considered to be acute gastroenteritis for a number of reasons, usually the following factors should be considered: 1. to pay attention to possible improper feeding, exceeding the child’s intestinal digestive capacity, increasing the burden on the digestive tract, will appear to pull and vomit; 2. to pay attention to infection factors, common is the intestinal virus infection, such as rotavirus infection, norovirus infection, etc., can also be seen in bacterial infection caused by The acute gastroenteritis; 3, pay attention to the child may be localized cold, causing gastrointestinal dysfunction, will also lead to pulling and vomiting; 4, also consider some children’s poor nutritional status, or the presence of underlying chronic diseases of infants, the intestinal micro-ecosystem imbalance, but also prone to decline in digestion and absorption, inducing gastroenteritis caused by pulling and vomiting.