Colon cancer may be the result of a combination of genetic factors, environment, living habits and improper diet, which are related to diet. Colon cancer is a common malignant tumor of the digestive tract, and the cause of the disease has not been completely clarified. However, researches have shown that the occurrence of colon cancer has a certain relationship with diet, including high-fat, high-protein, low-fiber diet, or lack of trace elements and vitamins. Besides, colon cancer is also related to genetic factors and lifestyle habits such as smoking, obesity and too little exercise. Secondly, colon cancer may also be related to long-term mental depression, ulcerative colitis, Crohn’s disease and other tumor diseases. Typical symptoms of this disease include emaciation, weight loss, abdominal pain and bloating. Most patients have a good prognosis after standardized treatment in the early stages of the disease. To summarize, if patients are detected with colon cancer, they should actively cooperate with doctors for treatment and strengthen daily life management to avoid delaying the disease.