1. Is the incidence of urinary stones high? The incidence of urinary tract stones is high and is a common disease in urology, China is one of the three major stone prevalence areas in the world, the incidence rate in the south is as high as 5% to 10%. 2.What are the causes of urinary tract stones? There are many factors affecting the formation of stones, age, gender, race, genetics, environmental factors, diet and occupation have a great impact on the formation of stones. Abnormal body metabolism, obstruction of the urinary tract, infection, foreign body and drug use are the common causes of stone formation. 3.What are the dangers of urinary stones? Urinary tract stones can cause direct damage, obstruction, infection or cancer in the urinary tract, which leads to hematuria, pain, difficulty in urination, hydronephrosis or pus accumulation, perinephric infection, fever, kidney atrophy, renal insufficiency, and in severe cases, uremia. A few kidney stones can cause squamous carcinoma of the renal pelvis with a high degree of malignancy!