The vomiting may be caused by indigestion, acute gastroenteritis, gastrointestinal flu, etc. If the situation is more serious, you need to go to the hospital for relevant examination and treatment according to the specific cause. Common causes and treatment 1, indigestion: baby’s gastrointestinal tract function is not fully developed, the food eaten is difficult to digest, piled up in the gastrointestinal, stimulated by the cold will appear vomiting symptoms, accompanied by bloating, constipation, etc.. Parents can appropriately give their children probiotics to adjust the gastrointestinal tract environment to promote digestion; 2, acute gastroenteritis: because the baby’s gastrointestinal tract mucosa is more delicate, sudden cold easily inflammation, vomiting, diarrhea, abdominal pain and other symptoms. Need to appropriate fasting 3-5 hours, can give montelukast to stop diarrhea, the situation will be serious dehydration, to timely rehydration, correct the symptoms of dehydration, such as vomiting serious need to consider the possibility of bacterial infection, can check the diagnosis after the application of antibiotics; 3, gastrointestinal flu: baby eating cold vomiting may be caused by gastrointestinal flu, treatment to symptomatic treatment, such as the use of montelukast to relieve diarrhea as prescribed by the doctor. If there is dehydration, need to cooperate with rehydration and electrolyte supplementation, while paying attention to rest, appropriate drinking water; 4, intestinal entrapment: can be induced by intestinal peristaltic rhythm disorder, manifested as violent vomiting, paroxysmal crying, abdominal pain, blood in the stool, etc., need to promptly go to the pediatric surgery. Parents should pay attention to the baby’s abdomen to keep warm, do not wear thin clothing, and try to eat less cold and irritating food. If the baby has abdominal pain, parents can relieve the baby’s discomfort by using hot water bags to warm the baby.