Gastrointestinal flu is mainly caused by a virus called “Coxsackie” and may be accompanied by bacterial mixed infections. The symptoms of the disease are: stomach distension, abdominal pain, vomiting, diarrhea, multiple bowel movements a day, weakness, and severe dehydration and electrolyte disorders in the body. The main focus is to rehydrate, stop diarrhea, and maintain electrolyte balance. If the symptoms of severe dehydration are already present, intravenous rehydration therapy can be administered. If there is repeated vomiting even after fasting and water fasting, further symptomatic treatment such as stomach protection and antiemetic is needed. If the diarrhea is severe, antidiarrheal drugs such as montelukast, granules of decadron, Bacillus cereus capsules and tannin yeast can be administered. Symptomatic supportive treatment such as acetaminophen and ibuprofen should also be given to reduce fever and physical cooling for fever and other cold symptoms. For children with gastrointestinal colds, they can also take some Chinese herbal medicines to relieve food and stagnation, such as Jia Wei Bao He Wan and Zhu Pu Monkey Date San. If the child has abdominal distension, abdominal pain and vomiting, he can first take Si Mo Tang Oral Liquid to stop vomiting and eliminate food, and then take other medicines after about half an hour. But no matter what the situation is if the baby’s symptoms can not be relieved or actively seek medical attention, there is a doctor to decide the method of medication.