原发性肝癌是我国高发恶性肿瘤,发病率位居恶性肿瘤第3位,死亡率居第2位。原发性肝癌恶性程度高,易转移、复发；临床诊治断时多数已属中晚期；大多数合并肝硬化、肝功能不全,使临床治疗困难,总体疗效差。近年来手术、非手术治疗肝癌均取得可喜进展,不少患者从中获益,放疗在其中发挥着不可替代的重要作用。 Primary liver cancer is a high incidence of malignant tumors in our country, the incidence of malignant tumors ranked No. 3, the second highest mortality. Primary liver cancer has a high degree of malignancy, easy to metastasis and recurrence. Most of the patients have advanced diagnosis and treatment. Most of the patients have cirrhosis and liver insufficiency, which makes the clinical treatment difficult and the overall curative effect is poor. In recent years, surgery, non-surgical treatment of liver cancer have made gratifying progress, many patients benefit from it, radiotherapy plays an irreplaceable important role.