Prostate stenosis may be caused by prostate hyperplasia in middle-aged and elderly people, trauma and surgery, and chronic urinary tract infections. 1. Prostate hyperplasia in middle-aged and elderly people: the prostate gland surrounds the posterior urethra, and the urethra will be compressed when the prostatic hippocampus is hyperplasia, and the urethra will be narrowed by the compression, which will result in the urine not being able to be discharged normally. 2. Trauma and surgery: such as pelvic fractures or straddle injuries, resulting in damage or breakage of the membrane of the urethra and the tip of the prostate, after healing, scarring will be formed, resulting in urethral stricture. 3. Chronic urinary tract infections: such as gonococcal-induced urethritis, which can cause scarring throughout the urethra, leading to urethral stricture. The cause of prostate stenosis needs to be clarified, and further examination, including urethroscopy, prostate ultrasound, to find out the specific cause and then targeted treatment.