Urinary Continence of Female POPRC and OIN

Inclusion Criteria: 1. Female patients aged between 55-75. 2. Patients those who are diagnosed with organ-confined urothelial carcinoma（\<pT3） 3. Patients those who are capable for radical cystectomy with orthotopic ileal neobladder. 4. ECOG score between 0-2; 5. Normal renal function; 6. Patients those who volunteer to participate in this study and sign the informed consents. 7. Patients those who are able to cooperate in the study. Exclusion Criteria: 1. Absence of tumour in bladder neck or urethra; 2. Patients thsoe who are diagnosed distant metastasis before surgery. 3. Previous history of malignancy of pelvic organs or surgical resection of pelvic organs; 4. Patients those who are diagnosed with other malignancies.; 5. Patients those who had received pelvic radiotherapy or major pelvic operation. 6. Pregnancy status; 7. Any other conditions that the researcher considers to be excluded from this study