You may get colon cancer without colon polyps, because not all colon cancer is caused by polyps, but also related to dietary factors and genetic factors. 1. Dietary factors: if patients consume high-fat food for a long time and have insufficient dietary fiber intake, it may lead to colorectal cancer, and colorectal polyp is only one of the factors of colorectal cancer. If it is adenomatous polyp, it will have the risk of cancer, and when the patient is inflammatory bowel disease, cancer may also occur. 2. Hereditary factors: If patients have a family tendency of colorectal cancer, the chance of getting colorectal cancer will be higher than that of general people, so they should take precautions in advance. Patients with colorectal polyps should go to the hospital for surgical resection, and go to the hospital for regular rechecking; for those who do not have colorectal polyps, they should do colonoscopy routinely, usually once every 1-2 years, for early prevention and early diagnosis. Life should be a light diet, avoid greasy food, if you have symptoms of physical discomfort, you should go to the hospital in a timely manner, consult a physician for guidance.