Radiofrequency ablation for liver cancer is an advanced minimally invasive interventional therapy technology. Radiofrequency ablation for liver cancer is to stab the radiofrequency ablation electrode needle into the inside of tumor lesion under the positioning and guidance of imaging equipment such as ultrasound or CT. After energized, the alternating current makes the top of the electrode needle oscillate with the surrounding tissues with ions, friction generates heat and conducts it to the surrounding tissues, and the temperature reaches 60~100 degrees. It can make the living tissue form a predetermined spherical or spherical-like coagulation necrosis. Through the development of technology such as increasing energy and prolonging ablation time, it can obtain a coagulation range of 3~5cm or larger, and achieve the effect of in-situ tumor extinction. However, it should be noted that the heat generated during radiofrequency ablation can cause damage to other organs, such as skin burns, diaphragm injury, intestinal perforation, etc.; it may also cause bleeding at the puncture site of the liver or hemorrhage under the hepatic peritoneum, as well as hepatic abscess at the treatment site. It is recommended that patients go to a regular hospital and follow the advice of a specialist to avoid any delay in their condition.