The duration of percutaneous nephrolithotripsy ranges from about 30 minutes to 2 hours, and the specific operation time is related to the number and size of kidney stones and the presence of hydronephrosis. 1. Related to the number and size of kidney stones: if the number of kidney stones is large, the volume is big and the texture is hard, the lithotripsy operation will take a longer time, which may take 1~2 hours; if the number of kidney stones is small, the volume is small and the texture is soft, the lithotripsy operation will take a shorter time, which may be finished in 30 minutes to about 1 hour. 2. Related to the presence of hydronephrosis: the hydronephrosis of the patient directly affects the selection of the puncture point of the kidney, and at the same time, the hydronephrosis may also affect the process of the surgery. 3. Others: the time of the operation can not be accurately judged, but also take into account the anatomical structure of the patient’s kidneys and ureters, the patient’s own state, some intraoperative accidents such as bleeding and infection, etc. Therefore, the above time is for reference only. If you have kidney stones, you should be treated in regular hospitals in time.