The cause of blood in the wipe after urination may be physiological factors such as female menstruation, and pathological factors may be capillary rupture due to damage to the mucosa of the urethra and other tissues, producing bleeding. Inflammatory diseases of the urinary tract, such as cystitis, urethritis, pyelonephritis and other causes, are likely to cause a small amount of blood in the urine, and stone disease is also likely to cause damage to adjacent mucosal tissues when urination is flushed by urine, and the phenomenon of blood in the urine. Women with cervicitis, mild endometritis, and sex hormone disorders may have a small amount of blood flowing from the vagina, which may slowly flow out with gravity when urinating in the squatting position, resulting in the phenomenon of blood wiping after urination. Elderly patients who have blood in their urine should be alert to the possibility of screening for bladder tumors and prostate tumors. Therefore, if there is blood in the wipe after urination, after excluding physiological factors, you should go to the hospital for further examination to determine the cause of the blood wiped out after urination. Normally, you should drink more water, do not drink alcohol and temporarily prohibit from having sex. If necessary, a urine test and other related tests should be performed to determine if it is blood in the urine.