Anal bleeding is not necessarily hemorrhoids, there are many causes of anal bleeding, including the following: hemorrhoids and anal fissure bleeding, but also the two most common causes of bleeding. Hemorrhoid bleeding is mainly painless bleeding, with a relatively large amount, bright red color, blood and stool separation, is dripping or even shooting blood after the stool, and some will be accompanied by anal hemorrhoid nucleus prolapse. In anal fissures, the bleeding is less, bright red in color, accompanied by anal tearing pain during stool, and old anal fissures are also accompanied by the anal fissure triad. Of course, other intestinal diseases can also cause bleeding, such as rectal cancer, rectal polyps, ulcerative proctitis, etc. In rectal cancer, bleeding is accompanied by changes in bowel habits, mucus, and a heavy stool. Most of the bleeding in ulcerative colitis is mucus-purulent stools. Therefore, once a patient has blood in the stool, he or she should go to the hospital for consultation and examination to clarify the cause of bleeding and then treat it accordingly.