If the child has repeated coughs and the treatment is not effective, it is considered that there is a state of hyperreactivity in the airways, that is, allergy, in which case the effect of cough suppression and anti-infection treatment is often not good. If there is no significant abnormality in the chest X-ray and routine blood tests, oral paracetamol can be used as anti-allergy treatment. You can also nebulize budesonide aerosol to moisten the airway to relieve bronchial spasm. Usually children should pay attention to keeping warm to prevent bronchial spasm after getting cold, avoid contact with oil and smoke and other stimulating smells, and eat less spicy and stimulating foods such as onion, ginger and garlic to cause acute attacks of symptoms.