The characteristics of hemorrhoid patients and cancer patients with bleeding in stool are different, mainly from the color of the blood when the patient bleeds in stool, and whether the blood is mixed with the stool and so on. Hemorrhoidal patients mostly have intermittent fresh blood after stool, and most of the blood drips down with the discharge of stool, so it does not mix with feces, and there is no mucus present, so it is usually blood on the surface of the stool, and blood on the handkerchief after stool. If cancer of digestive system such as rectal cancer is suspected, blood can be seen mixed with stool, and the color of blood is mostly dark red or jam color, or even tarry stool, and the stool itself will also have mucus and pus. However, only from the patient’s stool bleeding characteristics to distinguish hemorrhoids and cancer is not comprehensive, should also be combined with the patient’s medical history and clinical characteristics, improve the tumor markers screening, endoscopy, pathology and tissue biopsy and other tests, in order to diagnose the disease. For patients with long-term symptoms such as bloody stools, it is important to seek timely medical attention and follow the doctor’s instructions for systematic examination and treatment.