The difference between rectal cancer and hemorrhoidal bleeding usually lies in the color of bleeding and the location of pain. 1. Bleeding color: Usually, the blood in stool caused by rectal cancer is dark red, and the color of stool will gradually deepen. On the other hand, hemorrhoidal bleeding usually shows bright red color, and hemorrhoidal bleeding usually refers to internal hemorrhoidal bleeding, which will not be mixed with feces. 2. Pain site: patients with rectal cancer bleeding will have lower abdominal pain, and may have nausea and vomiting, loss of appetite and other symptoms. Patients with bleeding hemorrhoids will have anal pain, dry stools, anal itching and other symptoms. After the appearance of blood in stool symptoms, patients should go to the hospital in time for examination, to clarify the cause of the disease, and under the guidance of the doctor for active treatment. It is recommended that patients do not eat spicy and stimulating food, quit smoking and drinking, avoid greasy food, and keep the bowel movement smooth.