Patients with lung abscesses are usually hospitalized for 2 to 3 weeks for mild cases and 4 to 8 weeks for more severe cases. Lung abscess is a purulent disease of the lungs. Determining how long to stay in the hospital for a lung abscess depends on the individual case and cannot be generalized. Typically, for patients with milder disease, no underlying disease, and high drug sensitivity, hospitalization is often required for 2 to 3 weeks, and significant improvement is usually seen. However, for some of the more invasive pathogens, patients who generally have rapid disease progression, more severe conditions, more pronounced systemic reactions, or who are comorbid with underlying diseases and have poorer health, they may need to be hospitalized for 4~8 weeks, or even for a longer period of time. To summarize, once a patient is diagnosed with lung abscess, he or she should cooperate with the doctor for treatment as soon as possible, and at the same time, should strengthen the management of daily life and go to the hospital for follow-up on time, so as to make it easier for the doctor to understand the changes in the condition.