Stones occur in different parts of the body, the cause of disease will also be different, can not be generalized, common stones are gallstones, urinary tract stones, prostate stones and so on. 1. Gallstones: Excess cholesterol in the bile, excess bilirubin in the bile, and failure of the gallbladder to empty properly are all common causes of gallstones. The most common types of gallstones are bilirubin stones and cholesterol stones. 2. Urinary tract stones: The common causes of urinary tract stones include increased discharge of stone-forming substances, changes in urine pH, reduction of substances that inhibit crystal formation in the urine, and decreased urine output. Urinary tract obstruction, urinary tract infection, and the presence of foreign bodies in the urinary tract are also likely to cause urinary tract stones. 3. prostate stones: prostate stones in most cases are caused by inflammation of the prostate, prostate hyperplasia, urethral stenosis and other diseases. The reasons for the formation of stones in different parts of the body are also different. If stones appear, it is recommended that patients go to the hospital in time for relevant examinations and treatments, do not self-diagnosis and treatment, so as not to delay or aggravate the condition.