Rectal cancer is often misdiagnosed as hemorrhoids and treatment is delayed because there are no obvious symptoms in the early stage of rectal cancer, and the symptoms are very similar to those of hemorrhoids after it has developed to a certain extent, both of which are mainly symptoms of intermittent blood in stool and anal discomfort. However, if patients go to hospital at an early stage, they can be diagnosed by rectal finger examination by professional anorectal surgeons. 80% of the misdiagnosed rectal cancer patients are because they did not go to hospital for rectal finger examination by anorectal surgeons. Therefore, patients with anal symptoms such as blood in the stool must go to a hospital to receive an anal surgeon to rule out colorectal cancer before they can use hemorrhoid medication without fear.