The strong laser energy generated by the laser transmitter is used to crush the stones at the stone site. The energy generated by the laser can evaporate the water between the stone and the end of the fiber, form tiny bubbles, transfer the energy to the stone, and crush the stone into frag- ments and powder. At the same time, water absorbs a large amount of energy and reduces damage to surrounding tissues [1]. Laser lithotripsy is suitable for urinary calculi of various sizes in the urethra, bladder, ureter and kidney, and those with failed extracorporeal lithotripsy. Laser lithotripsy is the least damaging surgical option because of the limited penetration of the laser. In the process of lithotripsy, there is no other damage to the local very close tissue except thermal radiation, so the lithotripsy is relatively safe and basically has no obvious side effects.