Blood in the stool during menstruation should be distinguished whether the bleeding is vaginal blood or anal blood, which can be done by stuffing tampons in the vagina and then going to observe and test whether the stool has blood or blood in the stool. If it is blood in the stool, common causes include hemorrhoids, anal fissures, vaginal rectal fistula, rectal polyps and other diseases, which need to be clarified and treated for the cause. Common causes and treatments I. Non-disease factors Firstly, you need to determine whether blood in the stool during menstruation and whether menstrual blood is mixed in the stool. Secondly, endocrine disruption during menstruation leads to pelvic congestion, causing rectal mucosal congestion, capillary rupture, and thus the situation of blood in the stool, which usually returns to normal after the menstruation. Second, the disease factor 1, hemorrhoids: if women suffer from hemorrhoids can be manifested as blood in the stool and anal swelling, in the menstrual period when there is blood in the stool. The main treatment is to keep the stool open, eat easily digestible, less slag food, less strong tea, coffee, alcohol and avoid eating spicy food to reduce the stimulation of the anal canal. After the bowel movement, you should take a warm water bath and apply local hemorrhoid suppositories or hemorrhoid cream. Depending on the condition, injection therapy, cryotherapy and physical therapy can be used. Severe cases can be treated surgically, including ligation method, rubber ring ligation method, hemorrhoidectomy, etc.; 2. Anal fissure: If a woman suffers from anal fissure, it can be manifested as pain and blood in stool, and if you force to defecate during menstruation, you can have the symptom of blood in stool during menstruation. The treatment principle is to soften and unblock the stool, release the spasm of the sphincter through analgesia, and promote the healing of the ulcer wound. The clinical treatment for this disease is mainly surgical, according to the size and location of the fistula, choose the appropriate repair method, such as nudge flap repair, trans-perineal repair, trans-abdominal repair, etc.; 4, rectal polyps: if women suffer from rectal polyps, can be expressed as painless blood in the stool, if the onset of menstruation, you can appear the symptoms of blood in the stool during menstruation. The treatment of rectal polyps mainly takes surgical removal of polyps, microwave therapy and other treatment methods; 5, other: if women suffer from rectal cancer, colon cancer and other diseases, there can also be symptoms of blood in the stool during menstruation. The first thing is to go to the hospital to check the cause of the blood in the stool during menstruation, and then give targeted treatment.