The treatment of lung infection with excessive phlegm includes anticause treatment such as anti-infection and symptomatic treatment such as relieving cough and resolving phlegm. 1. Anti-causal treatment: according to the type of pathogens that cause lung infection, choose different kinds of anti-infective drugs. For example, broad-spectrum antibiotics such as cephalosporins (e.g., cefradine, ceftriaxone sodium) can be used for bacterial infections; for mycoplasma infections, macrolides such as azithromycin or quinolones such as levofloxacin are preferred. 2. Symptomatic treatment: If the patient’s phlegm symptoms are not very obvious, oral carboxymustan tablets, ambroxol oral solution and other phlegm agents for symptomatic treatment; phlegm symptoms are more obvious, can be infused with ambroxol injection, or nebulized inhalation of aminobromine solution, acetylcysteine and other drugs for symptomatic treatment. In addition, turning over and patting the back and coughing to expel sputum, to keep sputum drainage is also very important, if necessary, also need to establish an artificial airway, open the airway. Patients need to actively go to the respiratory medicine department of regular hospitals, and use drugs under the guidance of doctors.