目的　探讨肝动脉解剖变异及肝癌肝外侧支供血在化疗栓塞治疗中的重要意义。方法　对 10 0例行肝动脉化疗栓塞术治疗的肝癌患者均行肝动脉造影 ,对其中可疑肝动脉解剖变异或存在肝外侧支供血的患者又选择性行相应动脉造影。结果　 10 0例肝动脉造影发现肝动脉解剖位置变异 2 3例 ,17例存在侧支动脉供血 Objective To investigate the importance of anatomical variation of hepatic artery and the extrahepatic branch of liver cancer in the treatment of chemoembolization. Methods Hepatic artery angiography was performed in 100 patients with hepatic carcinoma treated by chemoembolization of the hepatic artery. Corresponding arterial angiography was also performed in patients with anatomical variation of suspicious hepatic artery or blood supply to the extrahepatic branch. Results 10 cases of hepatic artery angiography found that 23 cases of hepatic artery anatomy variation, 17 cases of collateral artery blood supply