There are treatments for malignant tumors of the liver without surgery . For primary malignant tumors or metastases in the liver, if Q5CM and Q3 in number, there are minimally invasive methods such as radiofrequency or microwave to eliminate the tumor without surgery, which are called tumor ablation therapy. The principle of ablation therapy is to locate the treatment puncture needle inside the tumor tissue and make the tumor tissue in the target area of the needle tip reach high temperature through radiofrequency output, or under the action of microwave field, resulting in coagulative necrosis and death. Radiofrequency treatment uses high-frequency current to make the ions of living tissues oscillate and collide with the change of direction of current to produce heat, and microwave is the polar molecules (protein, carbohydrate molecules) and charged particles (NA, K, CL) in living tissues oscillate, collide and generate heat under the action of microwave field. The tumor tissues in the target area can reach a temperature of 80-100 degrees, and the tissues will coagulate and die due to high temperature. Microwave is more thermally efficient than microwave. Contraindications for ablation: 1. Severe coagulation dysfunction, surgery may cause hemorrhage. 2. 2, the location of the mass is not suitable for ablation treatment, such as adjacent to the hepatic hilum 3, a large amount of ascites 4, important organ dysfunction, such as heart, liver and kidney dysfunction.