Inclusion Criteria:  1. Bladder carcinoma in situ, include CIS and T1G3 tumor, muscle invasive bladder cancer, include T2-T4aN0-1M0 2. Recurrent bladder cancer 3. Other conditions that have been approved by a urologist for indications for new bladder surgery 4. Voluntarily signed the informed consent -  Exclusion Criteria:  - 1. Preoperative serum creatinine more than 2.26mg/dl Or 200μmol/L 2. Cancer invaded prostate or urethral (confirmed by the pathology) 3. Abnormal PSA level, or suspected patients with unconfirmed prostate cancer 4. A history of other malignant tumors within three years 5. sigmoid chronic inflammation, like ulcerative colitis or intestinal tuberculosis, and so on.  6. Other conditions that have been approved by a urologist for not suitable for neobladder surgery