Comfort refers to the good experience of no disease pain and suffering, happy mood and mental relaxation, any factors that destroy this experience may cause discomfort, surgery and postoperative complications are the most important reasons affecting patient comfort, hydronephrosis is a common disease in urology, some cases can be relieved by surgical methods, but some special cases, such as: pelvic and abdominal tumor metastasis leading to ureteral occlusion, obstructive renal failure, or physically Patients in poor condition who cannot be operated, because the double J tube cannot be retained in the ureter, renal puncture fistula is feasible. However, after the recovery of renal function, due to the back of the waist with nephrostomy tube, life is extremely inconvenient, can not take a shower, engaged in a variety of activities and sleep for fear that the fistula tube fall off, fall off due to the fistula of the rapid healing, replacement is also extremely inconvenient, and need to be re-fistulae, the reason for this: medical advances in the birth of a new solution to the problem: renal pelvic subcutaneous bypass grafting. This method is introduced by Prof. Shan Ge from Heilongjiang Forestry General Hospital. Traditional nephrostomy, as the name suggests, is to pierce a hole in the kidney and insert a tube to drain urine, but renal pelvic bypass surgery has improved this method. This surgery involves percutaneous renal puncture fistula, placing one end of the renal pelvic vesicourethral drainage tube in the renal pelvis, creating a tunnel subcutaneously from the fistula opening to the middle of the lower abdomen, and pulling the other end of the tubing from the pelvic vesicourethral drainage tube underneath the skin to the middle of the lower abdomen. A bladder puncture is performed from the lower mid-abdominal area, and the other end of the pelvic vesicourethral subcutaneous drain is placed into the bladder. Using the principle of gravity and siphonage to drain the urine, this procedure is indicated not only for ureteral obstruction due to tumor compression or invasion, but also for patients with severe narrowing of the ureter that cannot be treated surgically, such as ureteral tuberculosis, or ureteral stenosis that is not corrected by repeated surgeries. Although the surgery spans from kidney to bladder, there are only two 1cm incisions, which is still minimally invasive surgery patients after surgery due to the removal of nephrostomy tubes, no wounds on the surface of the body, urine directly from the renal pelvis into the bladder through the subcutaneous drainage tubes, the appearance of the appearance of the normal people, the quality of life is significantly improved, the comfort has increased greatly, and the psychological burden on the patients has been reduced. It meets the better medical needs of modern people.