Abstract: ighty two cases of carcinoma of colon were reviewed. The reasons for delayed diagnoses in different extent were analyzed in terms of patients'age, characteristics of symptoms and the duration from the time of admission to the time of confirmed diagnosis. All diagnoses of 82 cases were confirmed by pathological examination, in which late cancers were 50%,affirmedover 6 months were 60%,and 6 young cases affirmedaverage 11 months.The results were similar with the reports at home and abroad. The critical question was the low rate of early diagnosis, which was the reason that the 5-year survival rate had not been improved during this decade. The author suggested that in order to attain an early diagnosis for carcinoma of colon, more attention should be paid to census, popularization of knowledge and vigilance this disease.

Key words: carcinoma of colon, early diagnosis, hematochezia