The elderly in their 70s may have blood dripping from urine, which may be caused by urinary tract infectious diseases, urinary tract stones, urinary tract tumors and other factors. 1. Infectious diseases of the urinary system: 70-year-olds do not pay attention to lower body hygiene, may induce infectious diseases of the urinary system, such as acute urethritis, resulting in localized damage to the urethra bleeding, which will lead to dribbling of blood in the urine, accompanied by pain in urination, urinary frequency, urinary urgency and other symptoms. 2. urinary stones: for example, urethral stones, may be secondary to bladder stones, in urination or position change, the stone movement, the urethra tissue damage, causing bleeding, can lead to dribbling blood in urine, may also be accompanied by urination difficulties, urination pain and other symptoms. 3. Urinary system tumor: for example, urethral tumor or bladder tumor, after the tumor surface tissue necrosis, it will cause dribbling blood in urine, and there will also be naked and painless hematuria. There are other reasons why people in their 70s have blood in their urine, so it is recommended to go to the urology department of the hospital for appropriate examination and treatment to avoid delaying the condition.