Radiofrequency ablation therapy for tumor is the most advanced minimally invasive tumor resection therapy that kills more tumors but damages the organism less. One of the characteristics of tumor cells is that they have poorer tolerance to heat than normal cells. This therapy is based on this characteristic and applies the principle of coagulative necrosis of tissue cells caused by radiofrequency thermal effect to achieve the purpose of tumor elimination. After the implementation of radiofrequency ablation, a coagulation necrosis zone with clear and nearly spherical boundary is formed around the ablation electrode, and the tumor tissues covered by this zone are destroyed and inactivated. The coagulated necrotic tissues are partially absorbed by the body, and these necrotic tissues have tumor seedling effect due to the change of their cellular immune phenotype, and henceforth play a special anti-cancer role to strengthen the patient’s immune function and further improve the therapeutic effect. The whole process of this treatment has been carried out under the observation and guidance of imaging equipment, with precise treatment targeting, clear scope and easy process control, and no damage to the surrounding normal tissues due to high temperature. According to our treatment experience, for tumors below 3 cm in diameter, a single RF ablation treatment can completely eliminate the local tumor and achieve the same effect as surgical resection; for tumors larger than 3 cm, single- or multi-point superimposed RF ablation treatment can be used, or arterial embolization of the tumor can be performed first to make part of the tumor necrotic, and then single- or multi-point superimposed RF ablation treatment can be used to finally The whole tumor will be burned to death. The therapeutic effect is similar to surgical resection, but there is no need to make an incision, only a puncture wound of the size of a needle eye, and the postoperative reaction is mild, recovery is fast and hospitalization time is short. It is also free from the serious side effects such as nausea, vomiting, hair loss and white blood cell reduction caused by radiotherapy. Currently, this therapy has been recommended by the American Society of Oncology as the first-line treatment option for solid tumors such as liver cancer, lung cancer, kidney cancer and liver and lung metastatic tumors. Although radiofrequency ablation therapy has many advantages, it requires a high level of clarity of the imaging equipment and the surgeon’s level of image discrimination and interventional puncture. The surgeon must be able to immediately identify which are “bad” tumor tissues and which are “good” normal tissues on the CT or ultrasound images, and then adjust the angle and depth of RF needle puncture across the belly to “catch” the tumor. Then adjust the angle and depth of RF needle puncture across the belly to “catch” the tumor, so as to completely kill the tumor while maximizing the protection of normal tissues. This all requires the surgeon’s good imaging level and rich experience in interventional treatment. Radiofrequency ablation can be used for the treatment of benign and malignant solid tumors of human organs. Currently, it is more clinically used for: liver cancer, kidney cancer, lung cancer, metastatic tumors of liver and chest. For patients with the above mentioned primary or metastatic advanced tumors that cannot be removed surgically, and patients with solid tumors that cannot bear radiotherapy and chemotherapy, they can all receive radiofrequency ablation treatment. In the past year or so since we introduced radiofrequency ablation treatment for tumors, we have successfully treated more than 30 patients, and most of them, like Mr. Wang mentioned above, have achieved good clinical cure.