Double J tube in the body will not damage the kidneys, the vast majority of urological surgery need to be placed in the double J tube after surgery, after countless medical records have confirmed that there is no renal parenchymal damage phenomenon. The material of double J tube belongs to the material of better histocompatibility, and belongs to the inert material, there is no stimulation to the organism, the patient almost can’t feel the existence of double J tube in the body, and its texture is very soft, so it won’t cause the destruction of the kidneys. Secondly, the time of keeping double J tube is relatively short, in principle, the time of keeping double J tube after surgery is about 2-10 weeks. During this period, you need to go to the hospital for regular checkups to see how the position of the tube has changed. If the tube is left in place for a long period of time, it may become infected and cause damage to the renal parenchyma, but a short period of time will not lead to the destruction of the renal parenchyma. Therefore, from clinical experience and actual medical records, the double-J tube does not damage the patient’s kidneys and is a routine operation after urological surgery.