Pain after urination with paper wiping with fresh blood may be caused by urinary system infection, urinary system stone, urinary system tumor, trauma and other factors. 1. Urinary system infection: for example, cystitis, urethritis, acute inflammation will cause the capillary of the mucous membrane to rupture, which will lead to pain after urination, wipe with paper with fresh blood. 2. urinary stones: common kidney stones, ureteral stones, bladder stones, etc., due to changes in the location of the stone, may cause the urethral mucosa blood vessel rupture, resulting in pain after urination, wipe with paper with fresh blood. 3. Urinary system tumors: bladder tumors, prostate tumors, urethral tumors, etc., may cause pain after urination with paper with fresh blood. 4. Trauma: If stimulated by external forces, such as car accidents, falls and injuries, etc., may also cause capillary rupture of the urinary system, resulting in pain after urination with paper with fresh blood. In addition to this, women need to consider whether they are in the menstrual period and so on. Pain after urination with paper wiping with fresh blood, there may be other reasons, you need to go to the regular hospital in time to check, follow the doctor’s prescription treatment.