A little blood on the handkerchief after the stool, but no feeling, considering the anus above the dentate line of related diseases caused by the more common for the internal hemorrhoids bleeding, but also may be rectal polyps, rectosigmoid colon cancer, etc., because of the dentate line of the anus above the anal canal without nociceptive nerve innervation. 1. Internal hemorrhoids: internal hemorrhoids are hemorrhoids located in the anus above the dentate line, internal hemorrhoids under the mucous membrane for the varicose vein mass, due to the dentate line of the anal canal above the pain nerve innervation, so in the internal hemorrhoids mucous membrane is damaged, can be found in the hand on the paper bleeding, but there is no feeling. 2. Rectal polyps: rectal polyps are elevated changes in the mucosal surface of the rectum, most of which are benign, and a small number of which will undergo malignant changes. Patients do not have obvious abnormal feeling, some patients can appear blood in the stool as well as a sense of urgency and heaviness, patients with polyp bleeding, more than no obvious abnormal feeling, only in the stool on the hand paper with blood. 3. Malignant tumor of rectum and sigmoid colon: cancer of rectum and sigmoid colon, patients may have change of bowel habit, and there is a sense of urgency and heaviness, and some patients may have pus and blood stools, and there is blood on the handkerchiefs when having bowel movement, but the patients do not have any feeling. In this case, it is recommended to go to the hospital anorectal department for examination, in order to clarify the diagnosis and treatment.