Vomiting is a common pediatric symptom, can be a single symptom, can also be one of a variety of complex symptoms, should be carefully analyzed to find out the cause of timely treatment, so as not to delay the diagnosis and treatment. Pediatric vomiting can be caused by diseases of the digestive system, but also can be seen in the systemic system of a variety of diseases. Digestive system diseases, including medical and surgical diseases may cause symptoms of vomiting in babies, commonly seen in acute gastritis, acute gastroenteritis, intussusception, intestinal obstruction, etc., but also can be seen in a variety of infectious diarrhea, viral hepatitis, acute mesenteric lymphadenitis, peritonitis, appendicitis, etc.; outside of the digestive tract disease is seen in meningitis, encephalitis, traumatic brain injury, upper respiratory tract infections, pharyngitis, pneumonia, and other causes, such as a variety of Other causes such as a variety of food or drug poisoning, motion sickness, vomiting, improper feeding, cold and so on. The causes of vomiting in one-year-olds are complex and should be diagnosed according to the mode of vomiting, the nature of the vomit, and the accompanying symptoms and history of the vomiting. If your baby vomits once or twice in a while, without other serious symptoms, you can observe and handle it at home. If the vomiting is frequent or accompanied by other symptoms, you should ask your doctor to confirm the diagnosis and treat the cause of the vomiting, so as not to delay it, so as not to cause dehydration or electrolyte disorders.