Patients bleed a lot of fresh blood in the stool for the following reasons: a. Hemorrhoids: can lead to bleeding in the stool, the most common among the clinic, this situation is especially frequent in the case of internal hemorrhoids, many patients with internal hemorrhoids rupture bleeding hemorrhoids, often appear more obvious fresh blood, and this fresh blood does not mix with feces. Second, rectal polyps: if they grow faster or rupture, they may also appear fresh blood. Third, anal papillary hypertrophy or anal fissure: bleeding caused by some small fissures in the anal sphincter due to constipation or difficult defecation is also more common. In short, fresh blood during defecation should be given high priority, and should be actively done at the hospital for rectal diagnosis or colorectal microscopy to find the specific cause of bleeding and then treated.