目的　探索大肠癌早期发现的有效监控措施。方法　对 6 4 7例大肠癌高危人群实行无症状定期结肠镜随访。结果　 6 4 7例高危人群中发现大肠癌 18例 ( 2 .8% ) ,其中无淋巴结转移的早期癌 13例 ( 72 .2 % )。结论　实行对大肠癌高危人群的监控 ,积极治疗癌前期病变———大肠腺瘤 ,是防止和降低大肠癌的发生非常有效的措施 Objective To explore the early detection of colorectal cancer effective monitoring measures. Methods Sixty-four patients with high risk of colorectal cancer underwent asymptomatic colonoscopy follow-up. Results Colorectal cancer was detected in 18 of 47 cases (2. 8%) in high risk group, of which 13 cases (72.2%) had early stage carcinoma without lymph node metastasis. Conclusion The implementation of monitoring of high-risk groups of colorectal cancer, aggressive treatment of precancerous lesions --- Colorectal adenoma, is to prevent and reduce the incidence of colorectal cancer is a very effective measure