Patients with lung infections are first advised to complete the following tests to assess their condition and determine the pathogenic organisms. First, routine blood tests should be performed to determine whether the blood is elevated and whether the infection is bacterial or viral, followed by sputum culture and, if necessary, fiberoptic bronchoscopy to determine whether the pathogenic bacteria are Gram-positive cocci, Gram-negative bacilli, or viral. At the same time, it is crucial for the patient to have a chest CT or a chest X-ray to understand the extent and location of the infected lung lesion. The final treatment is anti-infective therapy. In terms of drug selection, for pathogenic bacteria, we can carry out antiviral and antibacterial treatment, for example, the commonly used drugs are ribavirin and oseltamivir; quinolones are moxifloxacin and levofloxacin; cephalosporin antibiotics cefuroxime and ceftriaxone, etc. Patients with more pronounced symptoms of cough and sputum can also undergo symptomatic cough and sputum treatment to relieve their symptoms and improve their comfort level.