Urinary stones include kidney, ureter, bladder, and urethral stones. Many patients often visit ultrasound for back pain, hematuria, etc. Urinary stones are found. However, there are also people who have no symptoms and have impaired kidney function by the time they are found to have stones. Therefore, urinary stones should not be treated carelessly and should not be left untreated because there are no symptoms such as pain. Nowadays, minimally invasive techniques are mature enough to deal with these stones without the need for an incision. Minimally invasive treatment for kidney stones is mainly percutaneous kidney stone extraction, which means a small hole is made to go in and remove the stones. Nowadays, kidney stones can also be treated with ureteroscopic techniques, which are less invasive, but the stones must not be too large. For ureteral stones, a ureteroscope is used to enter the ureter and then use a tool to break up the stone and remove it from the body. What is commonly referred to as laser lithotripsy is actually known as extracorporeal shock wave lithotripsy, which can handle smaller kidney and ureteral stones. For large kidney stones, extracorporeal lithotripsy is not as effective as percutaneous kidney surgery.