When a baby has a respiratory infection or asthma there will be a cough, and it is often seen that the baby will vomit to varying degrees during a violent cough. First of all, we need to clarify what causes the baby’s cough and vomiting. If the reflex vomiting is caused by a violent cough that stimulates the nerves in the throat area, you need to actively treat the cough, control the causes of the cough, such as bacterial, mycoplasma or viral infections, treat asthma, and give the child cough-suppressing and phlegm-calming medication to treat it. It is also a good idea to give your child plenty of fluids to promote recovery from respiratory infections and nebulizer treatment to relieve the cough and thus effectively avoid vomiting. Of course, during respiratory infection or asthma, if the child eats inappropriate food or medication with gastrointestinal reactions, vomiting may also occur. If this is the case, give the child a light and easily digestible diet, avoid medication with severe gastrointestinal reactions, and give the child vitamin B6 or aluminum phosphate gel to stop vomiting, both of which can have good effects. Children can have varying degrees of indigestion during illness, so taking pepsin or probiotics to improve the child’s digestive function can also have a supportive effect on coughing and vomiting. Most coughs and vomiting in babies are caused by respiratory infections, so it is important to actively treat respiratory infections and use anti-emetic medication when vomiting is serious.