There are two main methods to expectorate phlegm and cough, as follows: First, drug expectoration, also called expectorant treatment. In clinical practice, expectorant drugs are generally used for the treatment of phlegm or phlegm that is more pus-like. Commonly used drugs include mucolytics, such as acetylcysteine, ambroxol hydrochloride, bromhexine and other drug-related preparations, which can dilute the sputum and thus make it easier to be expelled. It can be treated either by oral administration or by nebulized inhalation. Secondly, mechanical sputum removal can be done by turning and patting the back to make the sputum expelled gradually, or by using a sputum removal machine to assist in sputum removal. For patients who are bedridden for a long time, they can also use an aspirator to aspirate sputum to assist in sputum discharge.