Renal ectopic opening is the failure of a well-developed kidney to reach its normal location within the retroperitoneal fossa. Ureteral ectopic opening is a site where the ureter opens beyond its normal position. So, what diseases should be differentially diagnosed in patients with renal ectopia accompanied by ureteral ectopia? The following is a brief introduction: 1. vesicovaginal fistula: vesicovaginal fistula, which is a kind of urinary fistula. A urinary fistula is an abnormal channel formed between the genital organs and the urinary system that manifests as a leakage of urine. Reproductive organ fistula is an extremely painful and damaging disease. Since urine cannot be controlled on its own and the vulva is immersed in urine for a long time, it not only causes physical pain to the woman, but also the patient is mentally burdened by the fear of being close to the masses and not being able to participate in productive work. In vesicovaginal fistula, if the fistula hole is located at and/or above the internal urethra, if the fistula hole is large, all urine leaks from the vagina and the patient is completely unable to urinate. If the fistula is small and the fistula is surrounded by granulation to form a flap, the patient can often control part of the urine and when the bladder is overfilled, overflow begins. 2, urinary fistula: urinary fistula (urinary fistula) is an abnormal channel formed between the genital organs and the urinary system, manifesting as leakage of urine. The common ones are vesico-vaginal fistula, urethro-vaginal fistula, uretero-vaginal fistula (collectively called urinary fistula). Reproductive organ fistula is an extremely painful and damaging condition. Since urine cannot be controlled by itself and the vulva is immersed in urine for a long time, not only does it cause physical pain to the woman, but the patient is also mentally burdened by the fear of being close to the masses and not being able to participate in productive labor. By strengthening maternal health care, carrying out new methods of delivery, correctly handling childbirth and improving the quality of surgery, damage to the genital organs can be avoided and the occurrence of genital fistulas will certainly be greatly reduced.