Symptoms of gastrointestinal flu in 13 year old children are mainly gastrointestinal manifestations such as abdominal pain, diarrhea, vomiting and loss of appetite. Some children are accompanied by fever, nasal congestion, runny nose, sneezing, coughing, head and body pain and other cold symptoms. Gastrointestinal cold, a type of influenza clinical manifestations, is mostly high in summer. In summer, due to the hot weather, children are greedy for cold, excessive eating cold drinks, and children’s gastrointestinal function is not yet mature, once the wind and cold, it is particularly easy to cause gastrointestinal reaction, resulting in diarrhea, gastrointestinal cold. The common symptoms of gastrointestinal cold, in addition to fever, nasal congestion, runny nose, sneezing, coughing, head and body aches and other cold symptoms, but also accompanied by abdominal pain, diarrhea, vomiting, loss of appetite and other gastrointestinal manifestations. Keeping warm, not craving for cold and eating less cold food can prevent the disease to a certain extent.