Percutaneous nephrolithotomy double J-tubes are usually removed about four weeks after surgery. Percutaneous nephrolithotomy double J-tube is a ureteral stent tube, also called double J-tube’s catheter, which will be placed in the body after the kidney stone patient has undergone the surgery to support and drain the urine. By placing a ureteral stent, the urine can be drained smoothly to avoid acute postoperative pain, causing acute obstruction, or the formation of stone-step-like changes. Percutaneous nephrolithotomy double J-tubes are also used to prevent patients from experiencing significant pain and symptoms of infection after the procedure, and are usually removed about four weeks after the procedure. If used for a long period of time it may cause discomfort such as urethral pain, redness and swelling, difficulty in urination, and pain in the lower abdomen, and in severe cases it may affect daily life. Patients after percutaneous nephrolithotomy are advised to have regular rechecks under the guidance of doctors and standardize the treatment under the guidance of doctors. Normally, reasonable diet, at the same time, drink more water, avoid strenuous exercise, avoid exertion and so on.