The lung nodules are usually considered to be lung tumors, but they can be benign or malignant, or they can be caused by lung infections, tuberculosis, etc. The normal lung tissue is composed of alveoli and bronchi, because the nodules in the lung are large and occupy the normal alveoli and lung tissue, so it is called an occupancy; once the lung occupancy is found, further examination is necessary to clarify its nature. There are many means of examination, as long as the active examination, the nature can be clarified, and according to the examination results, the corresponding treatment can be chosen. Of course, some patients may be suffering from infection or tuberculosis. As long as the diagnosis is confirmed, the treatment can be targeted and will not delay the treatment of the disease. Once an occupying lesion is found in the lung, we should pay attention to it, actively listen to the doctor’s advice, improve the relevant examination, and never take a chance. Most of such occupying lesions are lung malignant tumors, so do not delay the treatment.