Lung cancer is currently the main culprit of human health hazards and has a high incidence rate. The current treatment methods for lung cancer include surgical treatment and medical radiotherapy. For patients with advanced stage, they often lose the opportunity of surgery and can hardly bear the huge blow of radiotherapy. Minimally invasive treatment is currently the most acceptable treatment option for patients, which is less invasive, more repeatable and no less effective than medical-surgical treatment. Minimally invasive treatments include thermal ablation, cold ablation, and particle implantation. In this paper, microwave ablation is used as an example to demonstrate its therapeutic effect. Preoperatively, a mass tumor was seen in the right lower lung, and pathology confirmed lung cancer. The tumor was 80% necrotic on CT-enhanced scan review 1 month after microwave ablation.