Stress urinary incontinence, also known as tension incontinence, is a disorder in which urine flows out involuntarily due to increased intra-abdominal pressure, uprightness or walking due to flaccidity and weakness of the urethral sphincter. It occurs in adolescents due to congenital sphincter deficiency or poor function, in middle-aged patients due to injury, vaginal delivery resulting in hypotonia, and in elderly patients due to muscle atrophy due to estrogen loss, in addition to weakness after prolonged illness, malnutrition, diabetes, etc. can also lead to the occurrence of this disease. Symptoms: laughing, coughing, sneezing, walking upright, and uncontrollable urine flow. Diagnosis: 1. Typical symptoms; 2. Urethral length measurement: The length of the urethra is measured in the lithotomy and upright positions, respectively. In stress incontinence, the urethra length is shortened; 3, positive urethral lift test: 200-250ml of water is injected into the bladder, and the patient is made to increase abdominal pressure in the lithotomy position, and then the patient is made to increase abdominal pressure by lifting the junction of the urethra and bladder with the fingers through the vagina (do not press the urethra), and then the patient is made to increase abdominal pressure, and there is no incontinence; 4, urodynamic hints. Treatment: 1. Non-surgical treatment: perineal muscle training, contraction of the anal and urethral sphincters, three times a day, 15-30 times each time, for at least six months. Estrogen preparations can be given locally to elderly patients. 2, surgical treatment: at present, the best treatment effect is achieved by tension-free suspension of the middle part of the urethra, methods such as tension-free suspension of the middle part of the urethra behind the pubic bone and tension-free suspension of the middle part of the urethra through the closed hole to increase the angle between the neck of the bladder and the urethra to achieve the purpose of treating tension urinary incontinence. This procedure is simple, takes a short time of about 10-15 minutes, and has satisfactory clinical results.