Blood on the hand paper when wiping the buttocks during stool is related to diseases such as hemorrhoids, anal fissures and colorectal tumors. When you use your fingers to wipe your buttocks during a bowel movement and find some blood on the paper, it is more common to have a recurrence of hemorrhoids caused by long-term dry stools. Diet often eat spicy and stimulating food, are to cause this symptom, drink water, fresh vegetables and fruits intake is too little, will also lead to intestinal fire, more stool will be hoarded in the intestinal tract, repeated fermentation, absorption of water will form constipation, difficult to discharge. When coarse stool passes through the venous mass of the anus, the rupture of the venous mass can cause a recurrence of hemorrhoids, so bleeding from defecation can occur. Rough stool passing through the narrow anal area can also cause the local skin to crack, thus forming an anal fissure, which causes blood in the stool and is also accompanied by severe pain in the anal area. Intestinal tumors grow faster in the middle and late stages, which can cause local infiltration. Due to the rupture of tumor or invasion of local blood vessels, bleeding in stool may occur.