When doing imaging tests, if the results of the test have lung space-occupying lesions, it mainly indicates that there is a lung mass. This kind of mass may have benign tumor or malignant tumor, and may be caused by inflammation or calcification, which needs to be further examined according to the clinical manifestations and specific conditions. If it is caused by tuberculosis, it is mainly caused by the infection of lungs by tuberculosis bacteria; if it is caused by tumor, the cause is not very clear, it is mainly considered that it is caused by smoking, atmospheric pollution, inflammation stimulation, and it is also closely related to genetic factors, low immune function and endocrine disorders, so it needs to be further examined to confirm the diagnosis, and then formulate a treatment plan to treat it positively.