目的　探索从人群中普查大肠癌的简便快速经济方法。方法　用粪便隐血“序贯法”,即用愈创木脂试纸法测得阳性结果时,续用羧化乳胶免疫法,对仍为阳性者,最后以纤维结肠镜及活检以确诊之。从京、津、及北方9 城市地区选择102800健康人为普查对象。结果　共查出大肠癌25 例,腺瘤109 例。在40～49 岁人群中,大肠癌为1/11000人,腺瘤1/2000人;50～59 岁大肠癌1/2300 人,腺瘤1/500 人;60～69 岁大肠癌1/1300人,腺瘤1/400人。直肠、乙状结肠是大肠新生物的好发部位,占全部大肠癌的80% ,而腺瘤占61% 。结论　50～70 岁人群是大肠新生物高发年龄组 Objective To explore a simple and quick economic method for screening colorectal cancer from the crowd. Methods Using occult blood “sequential method”, that is, when the positive result was measured by the Guaifertin test paper method, the method of carboxylated latex immunoassay was continued, and those who were still positive were finally diagnosed by fiber colonoscopy and biopsy. 102800 healthy people were selected as censuses from Beijing, Tianjin and 9 cities in the north. Results A total of 25 cases of colorectal cancer and 109 cases of adenoma were detected. In 40 to 49-year-old population, colorectal cancer was 1/11000, adenoma 1/2000; 50 to 59 years of colorectal cancer 1/2300, adenoma 1/500; 60 to 69 years of colorectal cancer 1/1300 People, adenomas 1/400. Rectum, sigmoid colon is a new site of colorectal cancer, accounting for 80% of all colorectal cancer, and adenomas accounted for 61%. Conclusions The population aged 50-70 years is the new age group with large intestine