Liver cancer, bile duct cancer and other malignant tumors have a high incidence rate, and the current treatment methods include surgery, internal radiotherapy and chemotherapy. With the development of minimally invasive technology, a new generation of water-cooled microwave ablation machine has been widely used in the clinic, which has better therapeutic effect than the traditional treatments, with the features of less traumatic injury, fewer side-effects, and strong repeatability, providing a brand-new mode of treatment for the majority of patients with tumors. At present, for primary liver cancer, the survival rate of 1, 3 and 5 years is 91.2%, 72.5% and 59.8% respectively, while for metastatic liver cancer patients, the survival rate of 1, 3 and 5 years is 91.2%, 72.5% and 59.8% respectively. For metastatic liver cancer patients, the 1, 3 and 5 year survival rates are 73%, 30% and 16% respectively. CT-guided microwave ablation Preoperative lesion in the right lobe of the liver (arrow) On review 1 month after surgery, the tumor was completely necrotic. Another patient with primary hepatocellular carcinoma in the right lobe of the liver. 3 months after surgery (arrow) The tumor was completely ablated and necrotic. After interventional embolization of a tumor in the right lobe of the liver, the tumor was active on CT review. On review 3 months after ablation, the tumor was completely necrotic.