If a woman has blood on the paper wipe after urinating, it is recommended to go to the hospital for relevant tests to clarify the specific cause. Possible causes: 1. If a woman is in her menstrual period, she may have blood on her wipe after urination. It is necessary to exclude whether the woman is in her menstrual period. 2. If there is an infection in the urinary tract, such as urethritis or cystitis, then urination can occur and there can be blood. If there are stones in the urinary tract, such as bladder stones, urethral stones, or ureteral stones, they may lead to hematuria or microscopic hematuria. Blood is visible when wiped with hand paper after urination, and is often accompanied by pain in the area where the stone is located, such as pain in the urethra, pain in the small abdomen, or back pain or abdominal pain. Ultrasound examination of the urinary system is needed to rule out the presence of urinary stones.