1. Hemorrhoids may occur in the person of any age, and rectal cancer patients is more than middle-aged or elderly. 2. Hemorrhoids with blood stool, which is due to defecation, abrasions affected area, with most of the blood from the stool after trickle down, and is therefore not mixed with feces, mucus did not exist. And the stool of patients with rectal cancer is often mixed with blood, mucus and concentrated fluid, and stool habits will change significantly. Increase in the number of bowel movements, but also with Lijihouchong feeling. If after the administration still can not relieve diarrhea, it should pay special attention to the. 3. Fingers to enter into anus inspection is the most effective method. Because the majority of hemorrhoids and rectal cancer occurred in the fingers to reach the site. If a finger from the anus to enter into touch, and feel there are some protruding arabica for hemorrhoids. If there are enteral cauliflower lumps or marginal uplift of the Central Depression ulcers, and found only a narrow lumen to accommodate a finger, and check after that put stained with blood, mucus and thick liquid, it is very likely suffering from a rectal cancer, it should be taken to the hospital visit, so as to avoid mistakes treatment.