Causes of blood in the stool are: First, hemorrhoids, hemorrhoids is a relatively common anal and intestinal diseases, is also one of the common causes of blood in the stool. The typical symptom of hemorrhoids is blood in the stool, in the treatment can take Tongtai capsule, external hemorrhoid cream, as well as surgical treatment, etc. Suffering from hemorrhoids in the diet to eat less spicy and stimulating food, less alcohol, in the habits of life to increase the amount of activity, avoid sedentary. Second, anal fissure, anal fissure is also a common cause of blood in the stool. Third, the typical symptom of colorectal polyps is blood in the stool, colorectal polyps are swollen tissues raised on the mucosal tissues of the colon and rectum, which are mainly treated with surgery. The cause of blood in urine is kidney and urinary tract problems, nephritis, kidney stones, cystitis, urethritis, ureteral stones and so on may cause blood in urine, need to go to the hospital for further examination.