Fresh blood on the surface of the stool can be caused by a variety of reasons, as follows: 1, hemorrhoids: fresh blood on the surface of the stool, most due to hemorrhoids, especially internal hemorrhoids rupture caused by bleeding, sometimes bleeding more, and fresh, this internal hemorrhoids caused by bleeding in the stool, may be manifested as fresh blood drops on the stool after the stool. This is a common situation for hemorrhoids. 2, anal fissure rupture: some special types of fresh blood stool, may be due to anal fissure rupture caused by bleeding, as well as rectal polyps, and even some malignant tumor bleeding is relatively large, may also show fresh blood on the surface of the stool, but this tumor caused by fresh blood stool is mostly mixed with feces, this must This must be taken seriously.