How to do when defecate often bleeds

This belongs to the performance of hematochezia, there are many kinds of reasons can be caused, such as anal fissure, hemorrhoids, rectal polyps, enteritis, etc., should go to the hospital anorectal examination in time, when necessary may also do colonoscopy, if hemorrhoids caused, serious surgery treatment, usually their diet should also be light, keep stool unobstructed.