Urinary tract stones are an extremely common disease. A “stone” in the kidney, ureter or bladder not only causes pain, hematuria, but also urinary tract infections. If the stones block the urinary tract for a long time and cause hydronephrosis, even the kidney function will be damaged. The incidence of urinary stones in the elderly is quite high because of the decalcification and osteoporosis of the bones in old age, which causes a large amount of calcium in the bones to enter the bloodstream and be excreted in the urine, resulting in an increase in the calcium content in the urine, which can easily lead to urinary stones. Urinary tract stones are one of the most common urological diseases. The mechanism of formation is not completely elucidated, and the recurrence rate is high. There is no ideal prevention method for most stones. In the last decade, the treatment of urinary stones has developed rapidly, and about 90% of urinary stones can no longer be treated with traditional open surgery. The most commonly used methods for the diagnosis of urinary stones are: Ultrasound: stones of 0 or 3 mm or more can be detected, and skilled medical personnel can use ultrasound to examine stones in the entire urinary tract, which is intuitive, convenient and non-invasive. X-ray abdominal plain film: Most urinary stones can be seen. For negative stones, x-ray can penetrate the stone and thus cannot be seen. X-ray angiography (intravenous pyelogram IVP): For suspected ureteral stones, it is possible to determine whether the stone is a stone or a stricture. CT examination: If the above methods cannot make a clear diagnosis, CT combined with three-dimensional reconstruction can clarify the stone obstruction very clearly.