A small amount of stool coming out after wiping dry may be caused by undrained stool, hemorrhoids, anal fistula, nerve damage and other reasons. 1. The stool is not discharged: when the patient has a small amount of stool in the anus is not discharged, may lead to wipe after a stool out of the situation occurs, is a normal physiological phenomenon. 2. hemorrhoids: when patients with hemorrhoids, if the hemorrhoidal core is large may prolapse out of the anus, affecting the anal closure, resulting in a small amount of stool after drying the situation still occurs. 3. anal fistula: when the patient has an anal fistula, perianal abscess breaks down to form a fistula, fistula connected to the rectum inside and outside, after drying the stool, there may still be a small amount of fecal matter from the fistula, resulting in a small amount of fecal matter out of the patient appeared to be dry after drying the situation. 4. Nerve damage: when the patient brain nerve or spinal cord nerve damage, may affect the defecation center, resulting in anal sphincter function abnormality, resulting in fecal incontinence, there will be feces after drying the phenomenon of fecal discharge. There may also be other reasons why a small amount of fecal matter continues to flow after the stool has been wiped dry, so it is recommended that you go to the hospital in a timely manner to have the cause of the problem clarified under the guidance of a medical professional and to be given targeted treatment or therapy.