Urinary stones, referred to as urinary calculi, are particles or lump-like aggregates that form in the urinary system as a result of concentrated urine precipitation. However, kidney and ureteral stones are the most common. The clinical presentation varies depending on the location of the stone. The typical manifestations of kidney and ureteral stones are renal colic and hematuria. Before the onset of colic caused by stones, the patient does not feel anything, but due to some trigger, such as strenuous exercise, labor, long car rides, etc., sudden onset of severe colic on one side of the waist, and radiation to the lower abdomen and perineum, accompanied by abdominal distension, nausea, vomiting, and varying degrees of hematuria; bladder stones mainly manifest as difficulty in urination and painful urination. In recent years, ureteroscopy with holmium laser has been able to treat kidney stones larger than 2CM, which is safer than percutaneous nephrolithotomy and less damaging to human body. Holmium laser intracavitary lithotripsy was firstly carried out in Changzhi area in 2011, which can completely crush the stones through the natural channels of urinary system and discharge them. In addition, Holmium laser can also be used for ureteral stenosis and urethral stenosis incision, so that the majority of patients can avoid the pain of open surgery, and patients in our hospital can really enjoy the minimally invasive treatment.