Vomiting in babies may be caused by improper feeding or after getting cold. By improving the baby’s diet, feeding less at a time and keeping the baby’s abdomen warm, it will gradually ease. However, there are pathological vomiting, including frequent and violent vomiting. Consider pathological jaundice or biliary atresia, or acute gastroenteritis. In addition, whether the baby is in good spirits. Some babies have viral encephalitis and may have increased intracranial pressure, which may cause reflex vomiting. With childhood diseases, the changes are relatively rapid. In case of uncertainty, it is best to go to the hospital in time to see a doctor for careful identification.