The time of nephrectomy surgery is about 2-4h. The time of surgery varies for nephrectomy surgery caused by different etiologies, such as nephrectomy surgery for kidney tumor, which is about 2-3h. In case of tuberculosis of kidney or huge hydronephrosis, the time of resection is about 3-4h. When the inflammation causes more serious adhesions, the difficulty of surgical peeling is relatively large. If the tumor is huge and causes invasion of surrounding organs, the operation time may also be prolonged, but usually the time is about 2-4 hours. Different surgical methods also determine the time of different surgeries, for example, when laparoscopic minimally invasive surgery is performed, the time to perform nephrectomy is relatively shorter than that of open surgery. Therefore, it is necessary to judge the specific surgery time according to the specific disease, but usually the time is about 2-4h. This surgery time refers to the time of simple surgery, not including the time of anesthesia and post-surgery awakening.