Stool fluent but bleeding may be anorectal diseases such as internal hemorrhoids with bleeding, but also may be the early stage of intestinal tumors, colorectal polyps or inflammation caused by bleeding. 1. blood in the stool is most commonly associated with bleeding internal hemorrhoids: if the color of blood and stool bright red and clean, rather than dirty blood, and for the bowel movement of blood or blood on the handkerchief, but with the stool does not mix, it is considered that the internal hemorrhoids after the erosion of the bleeding caused by. 2. Hemorrhoidal bleeding is most likely to be confused with rectal tumor: if the blood in stool is mixed with stool, and the color is dark red and dirty, it is likely to be the bleeding of intestinal tumor, and if the stool is clear, it may be the early rectal cancer with bleeding. 3. Larger colorectal polyps can also have blood in stool: the color of blood is mostly dark red, mixed with stool, because benign colorectal polyps usually do not cause obvious narrowing of intestinal lumen, so the bowel movement is usually smooth. 4. Inflammatory bowel disease can also cause blood in stool: but generally the color of the blood is slightly lighter, and with mucus, and obvious diarrhea symptoms, and generally before defecation, there will be abdominal pain discomfort, after defecation, abdominal pain relief. In short, if you find blood in the stool, whether it is benign or malignant lesions, we should pay attention to it, and recommend that we go to the anorectal department of a regular hospital, and if necessary, perform colonoscopy to rule out, to avoid delaying the condition.