Lung space-occupying lesions usually refer to lung mass-like lesions on chest radiographs or chest CT, but the imaging examination of lung space-occupying lesions alone cannot clarify the nature of the lesion, nor can it clarify whether the disease is in the early stage or the late stage, and it needs to be further improved with relevant examinations. Lung space-occupying lesions are mainly pathological changes in lung tissues caused by various reasons, which are mostly seen in lung infections, tuberculosis, lung cancer, etc. Among them, lung abscess and old tuberculosis belong to benign space-occupying lesions, while lung cancer is a common lung space-occupying lesion and belongs to malignant tumors. When the examination suggests lung space-occupying lesions, patients need to do further examinations such as lung puncture biopsy, etc., to determine the pathological type according to the results of pathological examination, and then combine with the patient’s clinical manifestations, etc. to determine the progress of the disease. Patients with pulmonary space-occupying lesions need to consult a doctor in a timely manner, under the guidance of the doctor to clarify the cause of further treatment or treatment, while patients usually need to quit smoking and alcohol, and develop good living habits.