If the patient has persistent blood in the stool, if the stool is fresh blood, which is manifested by dripping blood after relieving the stool, this condition is considered to be hemorrhoids. If the patient has blood in the entire stool, hemorrhage from the colon is considered. Common diseases include colon cancer, colon polyps, colon tuberculosis, and ulcerative colitis, and it is necessary to determine whether the patient has symptoms of shock such as unstable blood pressure and rapid heartbeat. If such symptoms are present, blood transfusion is needed to maintain the patient’s vital signs and empty the intestine for e-colonoscopy to clarify the cause of bleeding. If it is clearly hemorrhoids, they can be treated with Ma Yinglong hemorrhoid cream or surgery. If it is clearly tuberculosis of the colon, anti-tuberculosis treatment is needed. If it is clear that it is ulcerative colitis, it needs to be treated with prednisone plus mesalazine plus neurontin. If the polyp is clearly a colon polyp, electrocoagulation and electrosurgery of the polyp should be performed under electronic colonoscopy. If it is clear that it is colon cancer, it needs to be treated by surgery as soon as possible.