There are many reasons for blood in stool, often including anal fissure, hemorrhoids, rectal polyps or tumors, coagulation dysfunction bleeding, other reasons, etc., need to choose the appropriate treatment according to the different reasons, including drug treatment, surgical treatment and so on. 1. Anal fissure: anal fissure is generally associated with long-term constipation, diarrhea and other factors, the patient will have blood in the stool, pain, itching, etc. Clinical treatment of anal fissure common medications are nitroglycerin ointment, Diosmin tablets, etc., if necessary, surgical treatment. 2. hemorrhoids: hemorrhoids are divided into internal hemorrhoids, external hemorrhoids and mixed hemorrhoids, because internal hemorrhoids and mixed hemorrhoids are often due to hemorrhoidal surface mucous membrane damage and blood in the stool, generally can be used under the guidance of the doctor Puji hemorrhoidal suppositories, chlorhexidine acetate hemorrhoidal suppositories and other medications, if necessary, surgical treatment. 3. Rectal polyps or tumors: due to dry stool or other reasons and other factors may cause rectal polyps or tumors surface mucosal damage and blood in the stool. Usually the bleeding is small, bright red or dark red, and can be treated by surgical removal. In addition, coagulation dysfunction bleeding, upper gastrointestinal ulcers, hemorrhagic gastritis, esophagogastric fundus varices, chronic colitis, digestive tract tumors, dysentery and many other diseases can cause blood in the stool. Due to the distance from the anus, the bleeding is mostly dark red, brown or even black. It is recommended that patients with blood in the stool should go to the hospital in time, after a clear diagnosis under the guidance of a professional doctor for standardized treatment.