Extracorporeal shock wave lithotripsy (ESWL) is a method of treating stone disease by using a focused shock wave generated outside the body to impact and crush stones in the body, including those in the urinary system, liver and biliary system, etc., so that they are excreted out of the body with the excretory fluid (urine or bile, etc.). The invention of extracorporeal shock wave lithotripsy and the resulting extracorporeal shock wave lithotripter is regarded as one of the three new medical technologies (CT, MRI, ESWL) of the 20th century. The birth of this technology has revolutionized the traditional treatment of urinary stones, which relied mainly on open surgery. It is a revolution in the treatment of urinary stones and is now recognized as the preferred method for the treatment of urinary stones. The advantages of extracorporeal shock wave lithotripsy: 1, breakthrough in tradition, the effect is visible: the technology is the latest stone treatment method in the world, using B ultrasound or X-ray positioning, patients and families can see the lithotripsy process with their own eyes through the screen, so that the effect can really be seen. 2.Comprehensive stone removal with remarkable effect: It can instantly destroy the hard surgery of stones on a precise track and crush them layer by layer from outside to inside. And have exact effect on all kinds of stones, a treatment, completely take out the stones. 3.Minimally invasive and controllable, safe and painful: the whole lithotripsy process is carried out completely outside the body, without the need to open the guide, safe and comfortable, no need to endure pain. 4.Saving time and money, convenient and fast: the whole lithotripsy process is 10-20 minutes, visual, accurate, safe, no bleeding, shorter hospital stay, faster recovery, and lower cost compared with traditional open surgery and drug treatment. Our hospital has introduced the most advanced electromagnetic type extracorporeal shock wave lithotripter, which is based on the principle of converting electrical energy into magnetic energy and then into mechanical energy, which is formed by focusing the mechanical energy through the acoustic lens. The important feature of this machine is that the pulse discharge is stable, each shock wave shape is almost the same, so the focus is relatively stable. The electromagnetic shock wave focal efficiency is high and there is no scattered shock wave. The emergence of electromagnetic shock wave is a major development of ESWL technology. Our hospital uses X-ray localization to treat kidney, ureter and bladder stones. The whole process of X-ray dynamically observes the stone crushing, which is characterized by small stone crushing particles, good stone removal, less damage and less pain. Especially for patients with renal colic attack, emergency lithotripsy can quickly relieve the patient’s pain with immediate effect.