After wiping the stool and then have a residue, generally may be anal incontinence, anal fistula, hemorrhoids and other manifestations. 1. Anal incontinence: mainly sphincter muscle damage or rectal sensory abnormalities, resulting in feces and gas can not be controlled, stool will be involuntarily out of the anus. 2. Anal fistula: mostly occurs in the rectum, perianal abscess, feces can be discharged through the fistula, resulting in the above symptoms. 3. Hemorrhoids: Hemorrhoids can also cause the anus not to close tightly, and there can also be a situation where the anus is wiped clean and then left behind. In addition, if there is anal trauma, can also cause anal sphincter contraction dysfunction, resulting in anal sphincter relaxation, also easy to appear after a while after the stool wipe and have a residual situation. The above symptoms should be timely to the hospital, under the guidance of the doctor to clarify the cause of the disease, and targeted treatment.