Patients with hemorrhoids who have dark red blood during an acute attack first need to undergo anoscopy to rule out two conditions. First, it is possible that the bleeding is due to increased localized hemorrhoid nuclei, and blood accumulates in the intestinal cavity for a long time and leads to coagulation formation, which aggravates the color of bleeding and requires surgery as soon as possible to avoid long-term chronic blood loss that leads to a decrease in the body’s blood volume and even anemia. Secondly, if internal hemorrhoid bleeding is excluded, if intestinal tumor or other organic lesions are considered, it is recommended that patients undergo electronic colonoscopy as soon as possible, because dark red bleeding or other accompanying pus, consider the possible existence of intestinal neoplastic lesions, and after clear examination, further symptomatic treatment according to the examination results.