According to the experience of radiotherapy for hepatocellular carcinoma in China, the indications for radiotherapy for hepatocellular carcinoma are: 1. histologically or cytologically confirmed or clinically diagnosed hepatocellular carcinoma; 2. single lesion; 3. liver function grade of Child-Pugh A; 4. good general condition of the patient, such as KPS ≥ 70; 5. normal bone marrow and renal function. Hepatocellular carcinoma not suitable for radiotherapy: 1. extrahepatic metastasis and/or distant metastasis has occurred; 2. liver function Child-Pugh grade B and C; 3. tumor boundary cannot be confirmed on imaging; 4. poor bone marrow and kidney function, or combined medical diseases cannot tolerate radiotherapy. However, many patients cannot be operated for medical reasons (poor cardiopulmonary function or inability to tolerate anesthesia, etc.), or the patient refuses surgery or is technically unable to undergo surgical resection. Radiotherapy for patients with liver cancer as described above yields relatively good results, with 3-year survival rates of 25-30%. However, for other more advanced hepatocellular carcinoma, such as patients with severe clinical symptoms due to tumor compression, etc., such as obstructive jaundice due to tumor compression in the hilar tumor; tumor embolism in the portal and inferior vena cava, and patients with corresponding clinical symptoms, radiotherapy for such patients also has a palliative effect, and although survival cannot be prolonged, patients’ quality of life after radiotherapy is significantly improved.