Poor urination, such as weak urine, thin urine line, interrupted urination, and inability to urinate, when these symptoms occur, they usually indicate the possibility of lower urinary tract obstruction (the urethra is not open anymore) or neurogenic bladder (urine is not powered anymore). Neurogenic bladder usually has a history of neurological pathology or diabetes mellitus, which is tricky to treat, and there is no fundamental treatment yet. Currently, the main means is to drain urine smoothly, protect kidney function and prevent infection, followed by improving urinary symptoms and improving quality of life. Common lesions of lower urinary tract obstruction include prostatic hyperplasia, urethral stones, urethral stricture, and bladder neck sclerosis in women. The main cause of dyspareunia in elderly men is prostatic hyperplasia, where the enlarged prostate gland compresses the narrowing of the posterior urethra, causing the posterior urethra to have an elevated demand for bladder contraction during urination, and the increased contraction of the bladder cannot resist the abnormally increased demand of the posterior urethra. The urethral stricture is also one of the causes of dyspareunia. There are many causes of urethral stricture, congenital urethral stricture is mostly seen in children, gonorrhea, indwelling urethra, urethral injury can also cause urethral stricture. Treatment should be based on the severity of the disease, choose urethral dilatation or surgery. I once admitted a young man who was diagnosed with prostatitis in several hospitals due to perineal discomfort, poor urination and no abnormal urinalysis, but many treatments such as oral medication, sitz baths and physical therapy were not effective. I followed up with the medical history and found that the young man had had a urinary catheter placed during surgery a few years ago, so I suggested that he undergo a cystoscopy. The cystoscopy revealed a significant narrowing of the patient’s urethra. This made it clear that the cause of his dyspareunia was urethral stricture, so he was given regular urethral dilatation treatment, and his perineal discomfort disappeared and he was able to urinate smoothly. The guy was very satisfied, a big stone in his heart fell to the ground, and finally happily entered the marriage hall before this year.