The urethra is always a burst of pain belongs to the urinary system abnormalities, the main reasons include urethritis, urinary stones, urethral tumors and foreign objects. 1. Urethritis: urinary tract infection (bacteria, mycoplasma, etc.) will cause inflammation, inflammation stimulation will lead to urethral mucosal edema, oozing, causing the mucosal ulceration, resulting in pain and discomfort symptoms. 2. Urethral calculi: Urethral calculi will scratch the wall of urethra in the process of discharging, which will cause local pain and discomfort after being damaged. 3. Urethral tumor: Urethral tumor will cause damage to the surrounding tissues, which will cause pain after stimulating the nerves. 4. Foreign body: because of man-made or external factors, the foreign body enters into the urethra, and repeated stimulation will also cause local pain and discomfort. The symptoms of repeated stabbing pain in the urethra and accompanied by hematuria, need to consult a doctor in time to observe, diagnose the specific causes, under the guidance of clinicians for standardized treatment.