A patient with a prolonged cough after a cold is called a post-cold cough. For this type of cough, patients are advised to improve their blood work to see if there is an elevated blood count and if the patient has had recurrent infections during this period, resulting in a prolonged cough that does not heal. If the patient has a high blood count, the first step is to treat the cause by giving antibiotics, such as amoxicillin and azithromycin. Secondly, patients with cough can add cough medicines with better effects such as pentoxifylline, suhuang cough capsules, compound methocarbamol capsules, and some cough medicines are compound preparations with better effects. The next thing is that patients always cough, but also pay attention to whether there is a combination of other diseases, such as gastroesophageal reflux disease, can also appear choking cough. There is also the postnasal drip syndrome, where the patient always has a runny nose because of a cold, which may pass through the postnasal tract and then reach the pharynx, stimulating the pharynx to produce a cough. So there are many reasons why a patient has a prolonged cough with a cold, but the overall treatment is aggressive cause-specific treatment. If there is gastroesophageal reflux, acid-suppressing drugs such as omeprazole and esomeprazole can be used. If the patient has postnasal drip, some astringents, such as phenomethamine tablets, can be used to reduce the runny nose and thus the cough.