Abstract: Objective :To study the clinicopathological characteristics of colorectal polyps in theNanchang area. Methods :We retrospectively investigated data from patients with colorectal polyps di-agnosed by colonoscopy in our hospital from 1990 to 2004. Results :A total of 21,853 patients had un-dergone colonoscopy examination and colorectal polyps were diagnosed in 2,889 patients. The positiverate was 13.2%. Within the positive cases, the ratio of males to females was 1.8:1, the average age was46.6± 16.5 years old, and the average age of male patients was older than that of the female patients(47.1± 17.5 vs. 45.5± 14.5, P<0.05). Forty-one percent of colorectal polyps detected were located in therectum, and 27.7% were in the sigmoid colon. Colorectal polyps were located more often in the left sidecolon than in the right side colon (35.8% vs. 23.1%, P<0.05). Of the colorectal polyps detected, 67%were adenomas. The patients with juvenile polyps were the youngest (12±4.8 years, P<0.05), and thepatients with adenomatous polyps were the oldest (52±14 years, P<0.05). By analyzing the clinicopatho-logical characteristics of cases of colorectal polyps during the fifteen years involved in our study, wefound that the detection rate of colorectal polyps, the average age of patients with colorectal polyps, andthe incidence of adenomatous polyps increased, while the incidence of inflammatory and retentionpolyps decreased. Conclusion :Colorectal polyps are common and its incidence is higher in males thanin females. Rectum and sigmoid colon are the most common sites. Juvenile and retention polyps occurmostly in young patients, and adenomatous polyps are found in adults. In recent years, the detectionrate of colorectal polyps, the average age of patients with colorectal polyps, and the incidence of adeno-matous polyps in the Nanchang area have increased, but the incidence of inflammatory and retentionpolyps has decreased.