Pulling blood out of the stool is a symptom of blood in the stool, the injury or lesion site is mostly located in the rectum, may be hemorrhoids or rectal inflammation, polyps, tumors and other diseases. 1. Hemorrhoids: mainly due to poor circulation around the anus and varicose veins, internal hemorrhoids may show up as blood dripping from the stool without pain, abdominal pain and other symptoms, so it may lead to symptoms of blood in the stool. 2. proctitis: for example, acute inflammation of the rectum and anal canal can cause capillary rupture of the mucous membrane, which leads to blood in the stool. 3. Rectal polyps: Rectal polyps may cause blood in stool due to stool stimulation or other reasons that cause capillary rupture of polyps, which may also cause blood in stool. 4. Rectal cancer: the surface mucous membrane of rectal cancer is damaged and broken, which can also lead to the symptom of blood in stool. In addition, constipated patients may damage the rectal mucosa and bleed when they defecate forcefully; coagulation dysfunction diseases, such as hemophilia, primary thrombocytopenic purpura and other diseases, can cause blood in stool. There may be other reasons for blood in the stool, you need to go to the hospital in time for examination, to clarify the cause of the disease and follow the doctor’s instructions for treatment.