Bleeding and pain during bowel movement is often considered anal fissure, hemorrhoids, proctitis and other diseases, and it is recommended to consult a doctor in time to clarify the cause of the disease and then treat it. 1. Anal fissure: mostly due to constipation, narrowing of the anal canal, etc., leading to straining during defecation, further tearing of the anal canal, resulting in bleeding and pain after defecation. 2. Hemorrhoids: mostly due to inflammatory stimulation, varicose veins and other reasons leading to the anal cushion downward, hemorrhoids flare-ups mainly manifested as itching, pain, blood in the stool and other symptoms. 3. Proctitis: symptoms mainly include anal pain, abdominal pain, abdominal distension, constipation and diarrhea alternately, mucus and blood in the stool, blood color bright red. Bleeding after defecation with a little pain, there may also be rectal polyps, rectal tumors, anal fistula and other diseases caused. Therefore, it is recommended that if the above symptoms occur frequently, you should go to the regular hospital for examination, and then follow the doctor’s instructions to be treated accordingly after a clear diagnosis.