Causing blood in the anus of the stool is a symptom of blood in the stool, causing blood in the stool has the following factors: First, hemorrhoids, hemorrhoids is a common anal and intestinal diseases, hemorrhoids can cause blood in the stool, blood in the stool or blood on the handkerchiefs, etc., constipation, sedentary, long-term alcohol consumption. Or eating spicy, irritating food may cause hemorrhoids. For hemorrhoids, you can take Tongtai capsule, Ma Ren soft capsule and other drugs, you can also use external hemorrhoid cream to apply hemorrhoids. To help the affected area anti-inflammatory, reduce swelling, relieve the symptoms of blood in the stool, diet should adhere to the principle of light diet, avoid spicy, stimulating food, avoid sedentary, more exercise. Second, anal fissure, anal fissure is the surface of the anal canal tissue damage, fissure formation of ulcerated surface, the main symptoms are anal pain, blood in the stool, constipation, you can take lactulose and other laxative drugs. Third, benign and malignant rectal tumors, need to be examined to clarify the diagnosis after treatment.