The main consequence of lung cancer puncture is to clarify the type of pathology of the patient, which can be more effective as a treatment. Because the basis of treatment for all malignant tumors, not only lung cancer, must be pathology, and because of the special structure of the chest, percutaneous lung puncture biopsy must be necessary if surgery is not considered at the time of initial diagnosis. Many people may still have concerns about the complications of lung puncture biopsy, which are mainly pneumothorax or small amount of bleeding in the pleural cavity, and some may have implantation metastasis after the puncture, but the occurrence of such cases is very rare. The most common one may be pneumothorax, especially in elderly patients with emphysema, but most of them can be absorbed on their own without treatment, or in severe cases, closed chest drainage can be done, which can be resolved. Overall, if lung cancer is considered, a puncture biopsy is necessary.