Children with flatulence and vomiting are usually associated with irregular diet, inflammation of the gastrointestinal tract, pyloric stenosis and other factors. 1. Irregular diet: If you don’t pay attention to the posture during feeding, or swallow a lot of air, you may vomit after eating. 2. Gastrointestinal inflammation: gastrointestinal infections, pathogenic bacteria repeatedly stimulate the gastrointestinal mucosal tissues, which can easily lead to a decline in gastrointestinal function, thus causing abdominal distension, nausea, vomiting and other symptoms, and in severe cases, it will affect the appetite. 3. Pyloric spasm and narrowing: a congenital malformation, when the pylorus spasm, so that the lumen becomes narrow, the food can not pass through normally, there may be vomiting, nausea and other symptoms. Children’s stomach bloating and vomiting may also be caused by not paying attention to warmth and cold stimulation when sleeping. It is recommended to observe for the time being. If the symptoms are serious and accompanied by symptoms such as weight loss and abnormal bowel movements, it is necessary to consult a doctor in time and analyze the cause of the disease through routine blood and stool tests.