According to statistics, liver cancer recurrence, the shortest time is a few months and the longest is 20 years, while 80% recurrence is two years after surgery. This indicates that the treatment effect of surgery is not satisfactory. Since it is difficult to achieve real tumor-free in surgery, some people propose to use various methods to kill tumor cells first and then remove the tumor, which avoids tumor dissemination caused by turning and squeezing the tumor during surgery, thus reducing the possibility of postoperative recurrence. At present, the commonly used methods include microwave, radiofrequency, freezing and anhydrous alcohol injection. Their actual effectiveness needs to be confirmed by further studies. Surgical treatment eliminates the indicated disease. For some metastases that are not visible to the naked eye surgical treatment is powerless. About 70% of cancer patients need radiotherapy during treatment, and about 40% of tumors can be cured radically with radiotherapy, so people start to choose radiotherapy. Modern radiotherapy in the treatment of liver cancer is equivalent to cruise missiles in modern warfare, which accurately locates the target area and precisely implements radiotherapy to irradiate the tumor to the maximum extent and best protect the normal tissues around the tumor. Whether combined with surgery or radiotherapy alone, it has shown excellent efficacy.