Colorectal cancer is one of the most common malignant tumors in the digestive tract.The morbidity and mortality of colorectal cancer are among the highest in malignant tumors,which has become a serious threat to human physical and mental health.The study on the risk factors of colorectal cancer can provide a theoretical basis for the prevention, treatment and rehabilitation of colorectal cancer.This paper reviews the risk factors related to colorectal cancer by analyzing existing research reports at home an...