The effect of gyroscopic knife in treating liver cancer is related to the specific condition, gyroscopic knife is not applicable to all liver cancer patients, and its application has strict indications. The treatment of liver cancer needs to take comprehensive treatment measures according to the specific condition of patients. Early stage liver cancer is mainly resected by surgery, while advanced liver cancer or those with extrahepatic metastasis are not suitable for surgery, radiotherapy is the first choice of treatment, including gyroknife and other treatment measures. Gyroknife can minimize the irradiation dose of surrounding normal tissues to achieve the purpose of killing cancer cells most effectively, and at the same time, reduce the irradiation damage of normal cells, which can reduce the adverse reactions, and it has a better therapeutic effect on middle and late-stage liver cancer. However, it should be used with caution for patients complicated with large amount of pleural fluid, ascites, malignant disease and serious infection. For the same disease, the treatment methods are different for different conditions of patients and different stages of the disease. Should be combined with the characteristics of their own condition, under the guidance of the doctor for standardized treatment.