Abstract: Objective To study the characteristics of colorectal cancer patients in Yunnan Tumor Hospital, and to provide the basis for the prevention and treatment of colorectal cancer. Me thods Retrospective analysis was used to review colorectal cancer patients who were diagnosed first and received the main treatment in Yunnan Cancer Hospital from March 2005 to December 2014.According to the sampling principle, there were 100 cases each year, with a total of 1000 cases. The clinical and pathological data were analyzed, including age, gender, pathogenesis, pathological type, and TNM stage. Re s ults The average age of the 1000 patients enrolled in the survey was (63.4 ± 12.8) years old, the male and female age group (60-69) accounted for the highest proportion.both men and women aged between 60 and 69 had a high occurance rate, and male patients were more than the female with a fraction of 1.42:1. Rectum is the most common primary site, accounting for 57%, followed by ascending colon, sigmoid colon, straight B junction, transverse colon, descending colon, and cecum.Adenocarcinoma was the main pathological type, accounting for 89.4%.Stage III was the most common in TNM staging, accounting for 35.9%, followed by stage II, I, and stage IV. Most rectal cancers were found at stage III, and colon cancer at stage II. Conclus ion The proportion of colorectal cancer in the age group (60-69 years) was the highest; the proportion of middle-aged and male was significant.The high incidence of colorectal cancer was60 ~ 69 years old, especially males.The main part of colorectal cancer was located in the rectum.Adenocarcinoma was the most common pathological type. Most patients were later stage when diagnosed.