For how to expel sputum from the lungs, patients with spontaneous cough can use expectorant drugs, such as tranylcypromine, eucalyptus pinene enteric softgels, acetylcysteine, etc. If the patient is bedridden and has no ability to expel sputum on his own, he can tap on his back to expel sputum, and if necessary, he can be suctioned by tracheal intubation. At the same time, routine blood tests, C-reactive protein, lung CT and other relevant tests should be completed to assess whether there is pathogenic bacterial infection, and relevant drugs should be used for treatment if there is pathogenic bacterial infection, for example, antibiotics should be used for treatment if there is bacterial infection, commonly used antibiotics include cefixime, amoxicillin, azithromycin, levofloxacin and so on. If the patient has an atypical pathogenic infection, azithromycin and erythromycin of the macrolide class, or levofloxacin and moxifloxacin of the quinolone class are needed. If the patient has a viral infection, antipyretic or antiviral drugs are needed.