大肠癌早期诊治是改善生存的唯一希望，因而早期大肠癌得到广泛重视。随着早期大肠癌病例数增加，其病理学研究愈加深入，大体和镜下分类得到深刻的阐明。与此同时，早期大肠癌诊断有了很大改善，治疗因类而异，已取得长足进步。本文综述早期大肠癌的病理学、分类、诊断和治疗等方面的进展 The early diagnosis and treatment of colorectal cancer is the only hope to improve survival, so early colorectal cancer has received extensive attention. With the increase in the number of cases of early colorectal cancer, its pathological studies have become more in-depth, and the general and microscopic classification has been profoundly elucidated. At the same time, the diagnosis of early colorectal cancer has been greatly improved. Treatment varies from class to species, and considerable progress has been made. This article reviews the progress in the pathology, classification, diagnosis, and treatment of early colorectal cancer.