There are many patients with blood in their stool, they think it is caused by hemorrhoids and do not pay attention to it. But blood in the stool can be caused by many reasons, such as: internal hemorrhoids, anal fissures, rectal polyps, ulcerative colitis, rectal cancer, etc. Therefore, we should not take it lightly, if there is blood in the stool, first of all, we must distinguish the color of the bleeding, before or after the stool, whether there is mucus and pus blood, whether there is difficulty in defecation, thinning of the stool and other symptoms, it is best to go to the hospital to let the specialist give a detailed examination, if necessary If necessary, fecal occult blood test and e-colonoscopy should be performed to clarify the diagnosis and provide early treatment to prevent delay.