The lithotripsy principle of the Holmium laser is that the energy generated by the laser vaporizes the water between the end of the fiber and the stone, forming a vacuole that crushes the stone. Holmium laser is a new type of laser that uses yttrium aluminum garnet as the activation medium. Holmium laser lithotripsy is currently used in urology to treat urologic stones and is a non-invasive or minimally invasive treatment measure. During treatment, an optical fiber is inserted into a mirror, the optical center is aimed at the stone, and a pulsed laser is emitted. The energy generated by the laser vaporizes the water between the fiber and the stone, creating a vacuole, which ruptures and generates energy that can pulverize the stone. At the same time, the water absorbs a large amount of the energy, so damage to the surrounding tissue is minimized. Holmium laser lithotripsy is safer and more applicable than traditional extracorporeal shock wave lithotripsy and pneumatic ballistic lithotripsy. To summarize, if there are stones in the urinary tract, you should consult a doctor in time.