尿路结石是一种常见的泌尿系统疾病，好发年龄为２５～４０岁，男性多于女性。报道中５岁儿童得尿结石１２０颗，在生活中并不多见。结石形成的原因比较复杂，有内在因素和外在因素。内在因素如遗传、饮食习惯、代谢异常及泌尿系疾病（如梗阻、感染、异物以及肾脏受损等）。外 Urinary tract stones is a common urinary system disease, good hair age 25 to 40 years old, more men than women. Reported 5-year-old children had urinary stones 120, rare in life. The reasons for the formation of stones is more complicated, with internal and external factors. Internal factors such as inheritance, eating habits, metabolic disorders and urological diseases (such as obstruction, infection, foreign body and kidney damage, etc.). outer