There are many reasons for bleeding from the buttocks, and instead of getting nervous about this symptom, the causes should be analyzed. The first, there may be bleeding caused by mixed hemorrhoids, hemorrhoids are a mass of varicose veins, usually in increased abdominal pressure, constipation or eating spicy and irritating food, resulting in swelling and rupture of hemorrhoidal veins stagnation, thus causing bleeding. The blood in the stool is usually bright red, the blood does not mix with the stool, it is jet-like and drip-like, and internal hemorrhoids can be treated conservatively and medically after bleeding, or surgically if necessary. The second, if the anus has a history of foreign body injury, such as a blow or foreign body invasion of the rectum, can also lead to anal bleeding, and this situation should be treated promptly. The third possible cause of bleeding from the buttocks is rectal polyps and rectal adenomas, where dry stools can easily erode the blood vessels on the mucosal surface and cause bleeding. So there are many reasons for anal bleeding, not necessarily fire, but possibly hemorrhoids, polyps or foreign body damage, etc. You should actively perform rectal examination, and if necessary, anoscopy can be inserted to clarify the diagnosis.