Radiofrequency ablation surgery for liver cancer is a minimally invasive treatment method that kills tumor cells by locally releasing radiofrequency electric current and generating high temperature by placing radiofrequency ablation needles through blood vessels under the guidance of imaging equipment. Radiofrequency ablation surgery for liver cancer is a relatively advanced physical treatment method. After skin puncture, radiofrequency ablation needle is placed into the tumor tissues in a targeted way, releasing radiofrequency electric wave, which makes the local temperature of diseased area become high, and the high temperature is used to make the tumor cells dry up, solidify and shrink, and produce aseptic necrosis, so as to achieve the therapeutic effect of eliminating the tumor tissues. Radiofrequency ablation is characterized by precision, thoroughness, small trauma and fast recovery. Radiofrequency ablation surgery for liver cancer is applicable to liver cancer with the maximum diameter of tumor not exceeding 3 cm, no vascular thrombus, no invasion of neighboring organs and normal coagulation function.