S, a newly married girl, but from her face but can not see a trace of happiness, replaced by a face of helplessness, after asking that she is married since, often constantly occurring frequent urination, painful urination, and even blood in the urine, with medicine just a few days, the results in the next sex after the offense again. Later, she was diagnosed with hymen umbrella after gynecological examination. The normal female urethra and vaginal opening spacing 0.5 ~ 0.8 M. Urethral hymenopathy is due to the urethral opening is covered by residual hymen or hymenal scar, urine flow is blocked during urination, reflux occurs; or because the urethral opening and vaginal opening are too close, the urethral opening is pushed into the vagina during sexual intercourse, so the urethral opening is easily damaged and contaminated, and even vaginal secretions are easily refluxed into the urethra leading to repeated infections. Due to the above anatomical relationship, various causative factors such as sexual intercourse, vaginitis, menstruation, etc. can easily cause retrograde infection in the lower urinary tract. The clinical characteristics of this disease are: (1) Mostly seen in young and middle-aged married women, with rapid onset, long duration and short interval, with frequency, urgency and painful urination as the main symptoms; (2) The disease is easily mistaken for specific or non-specific urethritis or cystitis, which is easily relieved by medication, but repeatedly and persistently; (3) The urinary routine may have no obvious abnormalities or mild abnormalities, while bladder irritation symptoms are more obvious; (4) Specialized examination reveals that the urethral opening is covered by a hymen of different shapes, or the distance between the urethral opening and the vaginal opening is too short. In view of the above features, it is recommended that young female patients with recurrent lower urinary tract infections should visit a gynecologist for routine examination of the urethral orifice and hymen, which usually reveals the above anatomical abnormalities. Diagnosis of this disease is not difficult with careful specialist examination, but IVU, cystoscopy, and urinary tract bacterial culture should be performed simultaneously to exclude other organic diseases.