Children have blood in the stool wiping paper, common causes are rectal polyps, anal fissure, bacillary dysentery and so on. 1. Colorectal polyps: colorectal polyps clinically occur in the rectum and the back wall of the colon, mostly solitary. The main manifestation of blood in the stool, bright red color, after pulling stool wiping paper with blood and other phenomena. 2. Anal fissure: children may have anal fissure due to very dry, thick and hard stools. Typical clinical manifestations of anal pain during and after defecation, accompanied by dripping blood and other phenomena. 3. Bacterial dysentery: children after the stool wipe paper with blood, may also be due to bacterial dysentery, mostly caused by Shigella infection, clinically manifested as pus and blood stool, fever and other symptoms. Therefore, when a child appears after the phenomenon of wiping paper, should be timely consultation, under the guidance of a professional doctor according to the actual condition, choose to target effective treatment.