Male, 58 years old. Physical examination found left kidney occupancy more than a month patient Zhejiang Ningbo, local ultrasound, CT found kidney cyst, left kidney central hilar tumor 3.2 * 75px, consider the possibility of kidney cancer. The local doctor suggested total kidney excision without the possibility of kidney preservation. After coming to our hospital, the patient requested kidney-preserving surgery. Zhang Jin, Department of Urology, Shanghai Renji Hospital, performed kidney-preserving surgery under general anesthesia on May 5, 2014, and the surgery went well, successfully removing the tumor and preserving the kidney. The postoperative recovery was fast and he was discharged from the hospital in 7 days. The pathology was clear cell carcinoma. Personal experience: for a completely endogenous tumor in the middle of the renal hilum, partial resection is extremely risky; however, if adequate preoperative preparation, precise design of surgical plan and meticulous operation are performed, it is still possible to save the kidney even if the tumor is located between the renal artery and pelvis.