Causes of urinary stones may be diet, environment, metabolic abnormalities, anatomical abnormalities, drug factors, etc. 1. Diet: Drinking too little water and consuming too much food with high oxalic acid content, such as spinach, etc., may lead to stones. 2. Environment: the environment is at a high temperature, sweat evaporation, urine concentration, easy to lead to the production of stones. 3. Metabolic abnormalities: hypercalcemia, hypercalciuria, hyperoxaluria, hyperuricosuria, cystinuria, hypocitraturia, hypomagnesiuria, etc., can lead to changes in the composition of urine, resulting in stone production. 4. Anatomical abnormalities: ureteral stenosis leads to urinary tract obstruction, and obstruction can lead to infection and stone formation. 5. Drug factors: divided into two categories: one for the high concentration in the urine and relatively low solubility of drugs, such as aminopterin, indinavir, etc.; the other for the ability to induce stone formation of drugs, including acetazolamide, etc., the metabolism of these drugs in the process of the formation of other components of the stone. If the examination found that the urinary tract stone, should promptly consult the doctor, follow the physician’s advice treatment.