大肠癌是一种常见的消化道肿瘤,目前在世界范围内呈上升的趋势。大肠癌在我国城市为第四位常见的恶性肿瘤,在农村为第五位。早期大肠癌的治疗目前仍是以手术为主的综合治疗。据统计,在诊断为大肠癌的病人中,Ⅳ期约占20％-30％,这些患者需考虑是否化疗。另外,有40％-50％的手术后复发患者,亦需考虑是否化疗。目前,氟尿嘧啶类是治疗大肠癌的主要药物之一。卡培他滨是一种口服氟尿嘧啶氨基甲酸酯新药,它是5-氟尿嘧 Colorectal cancer is a common gastrointestinal cancer, is currently on the rise in the world trend. Colorectal cancer in our country as the fourth most common malignant tumor in rural areas for the fifth. Early treatment of colorectal cancer is still based on surgery-based comprehensive treatment. According to statistics, in the diagnosis of colorectal cancer patients, Ⅳ period accounts for about 20% -30%, these patients need to consider whether chemotherapy. In addition, 40% -50% of patients with postoperative recurrence, also need to consider whether chemotherapy. Currently, fluorouracil is one of the major drugs for the treatment of colorectal cancer. Capecitabine is an oral fluorouracil carbamate drug that is 5-fluorouracil