Urinary incontinence, that is, involuntary escape of urine, is a sign and a symptom from a clinical point of view. Urinary incontinence can be divided into the following four types: I. True incontinence: also known as complete incontinence, urine flows continuously from the bladder, the bladder void state. Mostly due to trauma, surgery, congenital diseases that damage the bladder neck and urethral sphincter or sacral medullary injury resulting in complete loss of pubic nerve function. It can also be seen in urethrovaginal fistula and vesicovaginal fistula. Second, filling incontinence: also known as pseudo-incontinence, due to overfilling of the bladder causing constant overflow of urine. Mostly due to various causes of chronic urinary retention, men with prostate enlargement mostly lead to this type of incontinence. Third, urge incontinence: severe urinary frequency and urgency, the bladder is not under conscious control of the occurrence of emptying, mostly secondary to serious bladder infection. Stress urinary incontinence (SUI): involuntary leakage of urine when increasing abdominal pressure, mostly due to abnormalities in the normal anatomical relationship between the bladder and urethra, unequal pressure transmitted to the bladder and urethra by increasing abdominal pressure; or pelvic floor muscle relaxation. It occurs mostly in women with normal birth, obesity, diabetes, and also in women who have not given birth. About 70% of female urinary incontinence is stress urinary incontinence, and another part is mixed stress urinary incontinence and urge urinary incontinence. Female stress incontinence symptoms: when abdominal pressure increases, such as coughing, sneezing, crying and laughing, going up stairs or lifting heavy objects, urine flows involuntarily from the urethra, and can occur in severe cases when standing upright or walking. However, it is not accompanied by symptoms of urinary frequency and urgency. Female stress urinary incontinence (SUI) risk factors: 1, age: with age, the prevalence gradually increases, the high incidence age 45-55 years, with the age of the pelvic floor relaxation, estrogen reduction, urethral sphincter degeneration related. 2, childbirth: the risk of morbidity is significantly higher in women who give birth vaginally than in those who give birth by cesarean section, and the risk of morbidity is significantly higher in women who give birth by cesarean section than in those who do not give birth. It is related to excessive stretching and injury of pelvic floor muscles and ligaments caused by childbirth. 3, pelvic organ prolapse: stress urinary incontinence and pelvic organ prolapse often exist together. 4, obesity: obese women have a significantly higher chance of stress urinary incontinence, weight loss can reduce the incidence. 5, genetic factors: genetics and stress urinary incontinence has a clear correlation. 6, hysterectomy and other pelvic floor surgery: the destruction of the normal structure of the pelvic floor, directly leading to stress urinary incontinence occurs. In addition there are smoking, estrogen, physical labor and other possible related risk factors.