Unmarried leakage of urine may be acute urinary tract infection disease, stress incontinence, neurogenic bladder and other factors. 1. Acute urinary tract infection disease: may be related to poor hygiene, can be an acute attack, resulting in the urinary tract system mucosal hypersensitivity, there will be acute incontinence, common disease for acute cystitis or acute urethritis, may also be accompanied by frequent urination, urinary urgency, urinary incontinence and other symptoms. 2. Stress incontinence: it may be related to over-obesity, poor lifestyle and other factors, and urine leakage will occur when doing some actions with increased abdominal pressure, such as laughing, lifting heavy objects, sneezing and so on. 3. Neurogenic bladder: related to many factors, such as cranial tumor, hydrocephalus, diabetes mellitus, etc., which can lead to severe damage to the nerves innervating the bladder, there will be leakage of urine, and there may be difficulty in urination, urinary retention and other abnormal manifestations. Unmarried leakage of urine, there may be other reasons, it is recommended to actively seek medical attention, under the guidance of professional physicians.