Dry cough can be treated with anti-inflammatory and anti-allergy drugs. Anti-inflammatory drugs are commonly used as cephalosporins or amoxicillin capsules or azithromycin dispersible tablets, and anti-allergy drugs can be taken as ketotifen tablets or finasteride tablets with cough suppressant effects. Some long-term irritating dry coughs are caused by allergies to undesirable substances, so taking anti-allergy drugs will have some effect. In severe cases of dry cough, cough suppressants can be taken. Commonly used are compound codeine solution or strong cough lozenges, which are also very effective in treating dry cough. In addition to medication for dry cough, you also need to improve your diet, avoid eating spicy, greasy, fatty, cold and hard foods, drink more water, keep the room at the right temperature and keep the air convective, and the usual care for respiratory diseases is more important.