For colds, coughs, and bronchitis, the first step is to treat the cause. Patients are advised to check their blood work first to see what is wrong with the blood picture. If the patient’s blood picture is not high, it is usually a viral infection and antiviral drugs such as amantadine or paramivir can be used. If the patient’s blood picture is significantly elevated, consider the combination of bacterial infection, available antibiotics, such as amoxicillin, cephalosporin antibiotics or macrolide antibiotics azithromycin. Secondly, patients can take symptomatic treatment, such as expectorant and cough medicines, commonly used are Amoxicillin capsules, Suhuang cough capsules, acetylcysteine effervescent tablets, and Mucosolvan tablets, which have the effect of relieving cough and resolving phlegm. Patients can also use airway-dilating drugs to relieve spasm and asthma, such as theophylline extended-release tablets, which have the effect of improving symptoms and shortening the course of the disease.