Chronic lung abscess can be treated by anti-infection therapy or surgery. 1. Anti-infection treatment: Chronic lung abscess treatment depends on the cause of lung abscess, for chronic lung abscess caused by bacterial infection, anti-infection treatment is recommended. Generally, it is necessary to choose sensitive antibiotics according to the results of drug sensitivity test and bacterial culture test. Before the results are available, it can be treated by cephalosporin antibiotics and metronidazole. 2. Surgery: For lung abscesses caused by fungi or atypical pathogens, the treatment time is longer and the therapeutic effect is poorer, such as abscesses caused by Aspergillus infection and mycobacterial infection, it is difficult to control the condition completely through medication, so surgery is recommended. If the cavity does not disappear but increases in size, or even coughing up blood symptoms, it is recommended to be treated by surgical resection. It is recommended that patients with chronic lung abscess be treated by a doctor according to the patient’s physical condition and the severity of the disease, choose the best treatment method and follow the doctor’s instructions. During the treatment period, attention should also be paid to strengthening nutritional therapy, which is also a part of promoting the recovery of the disease.