Fire acupuncture, known in ancient times as “n-pricking” and “burning needles”, is a method of treating diseases by burning needles on fire and then stabbing them into the body quickly. The earliest written records appear in “Ling Shu? Longevity, rigidity and tenderness”: the pricker of cloth, with fire n of. Modern fire acupuncture is generally used for: long needle deep stabbing, treatment of scrofula, carbuncles and drainage of pus; short juice shallow stabbing, treatment of rheumatic pain, cold skin numbness, scrofula referred to is the modern tumor. The principle of modern radiofrequency ablation is quite similar to that of “fire needling” in Chinese medicine, and it is also a major means of non-surgical treatment for liver tumors, with the characteristics of minimally invasive, simple operation and low postoperative complication rate. The Celon POWER system introduced in 2010 is the most advanced dual-frequency radiofrequency ablation technology in the world, which can be operated under ultrasound guidance or intraoperative direct vision, completely avoiding the complications such as skin burns commonly seen in the past single-frequency ablation. The system can also adopt double-needle or triple-needle combined treatment mode in addition to the traditional single-needle treatment mode, which can cover liver tumors larger than 5cm in diameter at one time, avoiding the possible inactivation omission by repeated puncture and greatly improving the efficacy and safety. There are also other models of various radiofrequency ablation systems, which can be selected for different tumor sites and nature to achieve the best treatment purpose. The main indications of radiofrequency ablation technology: inoperable single or multiple liver tumors, including primary liver cancer and metastatic liver cancer; palliative treatment of tumors with individual diameter less than 5cm, or tumors larger than 5cm; liver function of Child-Pugh A or B grade. As the head unit of Minimally Invasive Cancer Treatment Committee of Shanghai Anti-Cancer Association, our department performs more than 400 cases of radiofrequency ablation of liver tumors every year, and the number of cases is still increasing year by year, with good clinical efficacy and some cases achieving complete remission. Especially for small hepatocellular carcinoma, the efficacy of radiofrequency ablation is similar to that of traditional surgical resection. After radiofrequency ablation treatment, the incidence of serious complications for patients is extremely low, with significant advantages such as less trauma, less complications and shorter hospitalization time.