Stress urinary incontinence refers to a sudden increase in abdominal pressure (such as when coughing, sneezing, laughing, lifting heavy objects or changing position), urination loses control and urine escapes involuntarily. Domestic statistics about 10-40% of women have varying degrees of urinary incontinence, and the incidence increases with age, and in recent years there is a trend toward younger age of onset. The main cause of stress urinary incontinence is the alteration of the anatomical structure and position of the pelvic floor, i.e., defective function of the internal sphincter and high mobility of the urethra. In terms of age analysis, young and young patients are mostly caused by congenital dysplasia of the pelvic floor; middle-aged patients are caused by malnutrition, disease resulting in physical weakness or multiple deliveries resulting in relaxation of the pelvic floor and vaginal muscles; elderly patients are mostly caused by female hormonal decline resulting in atrophy of the pelvic floor muscles. Women with stress urinary incontinence often have a combination of bladder bulge, vaginal and uterine prolapse. Cystourethrography reveals a loss of the urethral angle of the bladder, an increase in the angle of inclination of the urethra, and a funnel-shaped and prolapsed bladder neck, which can provide insight into urinary incontinence. Stress urinary incontinence can be divided into three types according to the angiogram: type I in which the posterior urethral angle disappears and the urethral tilt angle is normal; type II in which the posterior urethral angle disappears and the urethral tilt angle increases; and type III in which the bladder neck and posterior urethra open and descend when the abdominal pressure increases.