A small pile of blood at the end of defecation may be caused by hemorrhoids, anal fissure, digestive tract tumors and other diseases, the patient should consult a doctor in a timely manner to clarify the cause of the disease and then carry out the appropriate treatment. 1. Hemorrhoids: bleeding at the end of defecation may be caused by hemorrhoids, which before the onset of defecation, defecation time is too long, low-fiber diet experience, the patient will also have a feeling of anal swelling, pain and other symptoms, such people should eat more fresh fruits and vegetables, if necessary, potassium permanganate solution sitz bath or surgical treatment. 2. Anal fissure: the anal canal skin longitudinal fissure formation of small ulcers, the patient will have blood in the stool, anal pain, constipation and other symptoms, such people in the acute attack period should increase dietary fiber intake, sitz bath. 3. Digestive tract tumor: bleeding at the end of defecation may also be caused by digestive tract tumor, especially colorectal tumor, patients will also have diarrhea, fatigue, abdominal pain and other symptoms, they should seek medical treatment in time and prepare for surgery. All the above treatments and operations should be carried out under the guidance of doctors.