Sneezing leakage of urine is mostly seen in postpartum women, is a typical manifestation of stress urinary incontinence, common causes are urethral closure function injury, pelvic floor muscle relaxation, excessive obesity. 1. Urethral closure injury: larger pelvic surgeries such as transvaginal hysterectomy may damage the periurethral tissues and nerves, resulting in urethral closure dysfunction, when sneezing, abdominal pressure increases, and incomplete closure of the urethral orifice leads to urinary leakage. 2. Pelvic floor muscle relaxation (1) Older women, especially postmenopausal women, estrogen decreases, and the urethral sphincter, pelvic floor muscle degenerative lesions, abdominal pressure is greater, it is easy to cause stress urinary incontinence. (2) natural delivery of women in the production process, will cause some damage to the pelvic floor muscles, postpartum recovery is easy to cause the pelvic floor muscle relaxation, in coughing, sneezing, it is easy to leakage of urine. 3. Excessive obesity: excessively obese patients have more visceral fat, greater pressure on the bladder, in the abdominal pressure increases when the urine will involuntarily overflow, the formation of urine leakage. If the symptoms of urine leakage is more serious, it is recommended to go to the obstetrics and gynecology clinic for cystoscopy and urodynamic examination in order to clarify the cause of the disease, and follow the doctor’s instructions to take appropriate treatment measures.