Sneezing leakage of urine will generally are more female friends, may be due to pelvic floor muscle relaxation, resulting in stress incontinence or urethral atrophy and other reasons. 1. Stress incontinence: after female vaginal delivery, it will lead to pelvic organs and ligamentous relaxation of the ban, in daily life can be normal control of urination, but if there are some strenuous exercise, such as coughing and sneezing and laughing, the intra-abdominal pressure will be a sudden rise in the bladder pressure exceeds the urethral resistance, so there will be a leakage of urine, known as stress urinary incontinence. 2. Urethral atrophy: there are some women, after the absence of menstruation, the genitourinary tract will atrophy, the urethral sphincter tension decreases, there will be sneezing leakage of urine. Although this condition is not life-threatening, it can affect the quality of life, often preventing travel and socializing. There may be other reasons for sneezing, and prompt medical attention is recommended.