No urine from nephrostomy indicates that the fistula is not patent, the kidney is not functioning, and the fistula has not entered the kidney. 1. The fistula is not smooth, if the drainage tube is folded after fistula and the drainage tube is clogged with flocculent material, at this time, the drainage tube will not be able to drain urine, and the tube can be given to pass the tube to make judgment; 2. the kidney has no function, if the kidney has no function at all and cannot produce urine, there may be no urine inside the kidney, at this time there may be no urine after fistula after fistula; 3. the fistula does not enter the kidney, at this time there will be no urine inside the fistula, which can be determined by ultrasound or lumbar ct examination. There are many other reasons why there is no urine after nephrostomy, clinically it is necessary to determine the cause in detail before choosing the next treatment.