Dry cough and thick phlegm can be treated with cough suppressants and phlegm removers such as eucalyptus pinnatifida, myrtle oil, and acetylcysteine, or with nebulization if the results are not satisfactory. Acetylcysteine can be used to help dilute the sputum using nebulized preparations, which will help to eliminate the sputum. However, the cause of the dry cough and phlegm needs to be clarified before treatment, and the manifestation of many illnesses is mainly dry cough, but the effect of treatment of only cough suppressant is often ineffective, for example, allergic cough, pulmonary tuberculosis, lung tumors, and reflux esophagitis, which will show the symptom of dry cough and mucous phlegm, and the ordinary anti-infective treatment is ineffective. If you have a dry cough and sticky sputum, and there is no significant relief after cough suppression, sputum elimination and anti-infection treatment, you need to go to the hospital to complete the relevant examinations, such as chest radiographs, chest CT, laryngoscopy, etc., so as to make a clear diagnosis and timely treatment in order to avoid delays in the condition.