Older people with blood in urine may be due to urethritis, prostate hyperplasia, tumors, stones and other causes of pathological conditions. 1. Urethritis: blood in urine is possible when the urethra of the elderly is complicated by inflammation, because inflammatory factors can lead to increased permeability of blood vessels, rupture and so on, thus causing blood oozing out of capillaries accompanied by urinary discharge, which is usually accompanied by itching, urinary pain and other symptoms. 2. Prostatic hyperplasia: when benign prostatic hyperplasia occurs in elderly men, it may also lead to blood in urine. Because of the enlargement of the prostate surface blood vessels appear tortuous, dilation, blood vessel wall pressure gradually increased after rupture bleeding, with the urine after discharge. 3. Tumor: such as urethral cancer, bladder cancer, etc. When the patient has cancer of the urinary system, the malignant tumor can gradually increase in size and compress the surrounding tissues, nerves and blood vessels, which will trigger the rupture of blood vessels. The tumor may also rupture after growing too fast, causing bleeding and severe pain. 4. Stones: there are ureteral stones or kidney stones, and patients with bleeding in urine, because the stones in the patient’s ureter or kidney, scratching the local tissues, which in turn cause bleeding. Elderly people with blood in the urine can also be seen in other causes, symptoms should be timely to the hospital for examination and treatment.