There are many causes of chronic cough, and treatment needs to be tailored to the cause in order to effectively relieve cough symptoms. If the chronic cough is caused by asthma, cough variant asthma, etc., nebulization is useful. However, if it is caused by other reasons such as gastroesophageal reflux disease (GERD), nebulization is not useful, and the cause of the cough needs to be addressed. Chronic cough is defined as a cough that lasts longer than 8 weeks and can be caused by a variety of diseases such as asthma, cough variant asthma, gastroesophageal reflux disease (GERD), and postnasal drip syndrome. If the cough is due to asthma, cough variant asthma, the use of glucocorticosteroids such as budesonide and beta agonists such as terbutaline can be effective in relieving cough symptoms. If it is caused by other reasons such as gastroesophageal reflux disease (GERD), nebulization is usually not useful and the cause needs to be addressed. For example, in GERD, proton pump inhibitors such as omeprazole are needed to relieve cough symptoms. Chronic cough patients should go to the hospital regularly for review, to clarify the specific cause of the disease, according to the cause of the choice of the appropriate method of treatment. At the same time, chronic cough patients should also maintain a good diet in daily life.