Radiofrequency ablation is a new minimally invasive treatment technology for solid tumors emerging in recent years, which can save patients from the pain of incision, and has the advantages of high efficacy, little trauma, little pain, fast recovery, no after-effects, little risk, and wide range of indications compared with traditional treatments, and is regarded as a green treatment technology by experts at home and abroad. Since tumor cells are less tolerant to heat than normal cells, local heating to 39-40℃ can make cancer cells stop dividing, and when it reaches 41-42℃, it can cause cancer cells to die or DNA damage, and irreversible cell damage occurs above 49℃. High-frequency radiofrequency wave is emitted by radiofrequency electrode to stimulate the tissue cells to plasma shock, and the heat generated can make the local temperature reach over 90℃, thus killing the tumor cells quickly and effectively. Radiofrequency ablation can be used for benign and malignant solid tumors of human organs. At present, it has more clinical applications in the following areas: lung cancer, liver cancer, breast cancer, primary tumors, metastatic tumors, advanced tumors that cannot be surgically resected, tumors found to be incompletely resected by probing during surgery, and patients with tumors that cannot withstand radiotherapy and chemotherapy. The Department of Oncology of Yellow River Hospital has carried out radiofrequency ablation technology for more than one year, and dozens of tumor patients (including lung cancer and liver cancer) have been treated by radiofrequency ablation, and after the observation of the treatment effect, the patients recovered quickly, had good therapeutic effect, and there was no obvious toxicity and side effect.