When a patient has had blood in the stool for a week, the first step should be to seek prompt medical attention. The amount of bleeding and the severity of anemia should be clarified. If the bleeding is heavy and the anemia is moderate or above, a blood transfusion is needed to maintain the patient’s vital signs. If the patient is not bleeding heavily, the cause of the bleeding needs to be clarified as soon as possible. If it manifests as dripping blood or blood on the hand paper after relieving the stool, the possibility of hemorrhoids or anal fissure is considered high and an anal finger examination is needed to clarify. After the diagnosis is confirmed, the anal fissure can be treated with Ma Ying Long hemorrhoid cream. If the patient has blood in the stool or blood in the whole stool, then ulcerative colitis, colon polyps, or colon tumors are more likely, and you need to have an e-colonoscopy as soon as possible. If the diagnosis of ulcerative colitis is confirmed, you can consider using mesalazine plus rectified intestine to regulate. If the polyp is clearly a colon polyp, electrocoagulation and electrosurgery of the polyp should be performed under e-colonoscopy. If it is clearly a tumor of the colon, it is necessary to clarify whether there is recent or distant metastasis and whether surgery is needed.