Recent studies have shown that the incidence of colorectal cancer in China has been increasing year by year, and the number of new cases of colorectal cancer in China is expected to continue to increase year by year. The researchers analyzed the incidence trends of colorectal cancer using the Chinese tumor registry incidence data from 1998-2007 and made predictions for the incidence of colorectal cancer in China from 2008-2015. Colorectal cancer incidence data for 1998-2007 were extracted from the National Tumor Registry database, covering a total of 111,281 cases and 446,734,667 person-years of population. After completion of the survey, annual colorectal cancer incidence rates were calculated by geographical distinction and gender, and standardized incidence rates were calculated using the age structure of the world population. The trend of incidence rate change was analyzed by applying JoinPoint software to calculate the annual rate of change (APC value); an age-period-cohort Bayesian model was fitted to the trend of colorectal cancer incidence in China from 1998 to 2007 to predict the incidence of colorectal cancer from 2008 to 2015. Results: From 1998 to 2007, the national colorectal cancer incidence rate was 24.91/100,000 (111,281/446,734,667) and the standardized incidence rate was 17.67/100,000 in tumor registration areas; the male incidence rate was 26.50/100,000 (60,015/226,508,545) and the standardized incidence rate was 19.90/100,000; the female incidence rate was 23.28/100,000 (51,266/220,226,122) and the standardized The incidence rate for women was 23.28/100,000 (51,266/220,226,122) and the standardized incidence rate was 15.73/100,000. The incidence of colorectal cancer in urban registration areas increased from 23.29/100,000 (2617/11 237 967) in 1998 to 37.84/100,000 (8534/22 551 353) in 2007 for men and from 21.75/100,000 (2357/10 838 355) in 1998 to 31.34/100,000 (6913/22 057 787) in 2007 for women. /22,057,787); the incidence rate of males and females in rural registration areas increased from 10.36/100,000 (448/4,323,628) and 8.86/100,000 (372/4,197,806) in 1998 to 16.80/100,000 (1290/7,677,484) and 13.00/100,000 (978/7,522,690) in 2007, respectively. During the 10-year period, the incidence rate of colorectal cancer in both urban and rural populations in China showed an increasing trend, with APC values of 5.5% for urban men and 4.0% for women, and 6.0% for rural men and 4.3% for women. After adjusting for age structure, the rate of increase slowed down, with urban males, urban females and rural females increasing at 3.7%, 2.5% and 2.3% per year, respectively, while the standardized incidence rate for rural males reached an inflection point in 2004 and accelerated at a rate of 8.4% per year. Bayesian model predicts that the incidence rate of colorectal cancer in China in 2015 is 33.92/100,000 (125,000 cases) for urban men, 27.13/100,000 (93,000 cases) for urban women, 13.61/100,000 (48,000 cases) for rural men, and 13.68/100,000 (45,000 cases) for rural women.