The presence of stool in the urine may be a rectovesical fistula, which can be examined by cystoscopy, proctoscopy, routine urinalysis, routine fecal examination, routine blood tests and other ancillary tests. Rectovesical fistula can be caused by traumatic factors, surgical irritation, and congenital developmental factors. Will cause the rectal stool by the urine outflow manifested in urine with the appearance of stool most, will also cause urinary tract infection, resulting in abdominal pain, urinary frequency and urgency and other symptoms, you can do a cystoscopy, proctoscopy and other tests, generally able to find rectal vesicovaginal fistula, checking the blood routine, urinalysis, fecal routines and so on, to determine whether there are secondary infections and other complications. Rectal vesicovaginal fistula should be promptly consulted and treated under the guidance of a physician.