Kidney stones can be treated with laser surgery, either by holmium laser lithotripsy through percutaneous nephrolithoscopy or by holmium laser lithotripsy under ureteroscopy. The use of laser requires hospitalization and the patient needs to come under general anesthesia for the surgical treatment. If the stones in the kidney are large and there is a large amount of fluid in the kidney, percutaneous nephrolithoscopic Holmium laser lithotripsy is an option. The laser is then inserted into the kidney together with the nephroscope to find the stone and break it up under direct vision, and then the stone is removed through the lumbar channel to complete the procedure. However, if the size of the stone in the kidney is less than 2cm and there is fluid in the kidney or only a small amount of fluid, Holmium laser lithotripsy with ureteroscope can be used, without incision, from the urethra into the bladder and then into the ureter, after reaching the kidney, find the stone and then use the laser to powder the stone under direct vision. There is no trauma.