A cough that is not good for more than 10 days indicates that it is not caused by a simple disease and requires active investigation of the specific cause, first of all to distinguish whether it is a cough with phlegm or a cough without phlegm. If it is a dry cough, you can start with powerful cough suppressants to relieve it, such as dextromethorphan hydrobromide tablets and levomepromazine capsules. If the cough is coughing and sputum is present, you can add expectorant medications, such as Ambroxol Hydrochloride Tablets and Acetylcysteine Tablets. At the same time, blood analysis and chest X-ray should be improved to rule out any complications of inflammation of the lungs. If there is inflammatory infection of the lungs causing the cough, additional antibiotics such as amoxicillin capsules and cefuroxime tablets are needed for treatment. If the cough has been present for more than two weeks, allergen screening, exhaled nitric oxide testing, and bronchial excitation testing are also needed to determine if the cough is caused by chronic airway inflammation.