Urolithiasis is one of the three major diseases of urology. Since the disease is a lifelong condition, the recurrence rate is high, varying with stone composition, in untreated patients, and with stone composition, in untreated patients, the recurrence rate is as high as 50% to 100%, while in patients who receive control, the recurrence rate can be reduced to 10% to 15%. Therefore, prevention of stone recurrence is crucial. Stone composition analysis is a method to determine the nature of stones. Diagnostically it provides direct evidence for the etiology of non-calcium stones, and for calcium stones it helps to narrow the scope of the metabolic assessment of stones; therapeutically it is an important basis for the development of stone prevention programs and the selection of lithotripsy therapy, and thus a prerequisite for the individualized treatment of urolithiasis patients. The analysis of stone composition includes qualitative and quantitative analysis, and usually qualitative analysis is sufficient to meet clinical needs. Infrared spectroscopy is a commonly used physical analysis method, which is far more accurate than chemical analysis and requires only 1 mg of specimen (about the size of a rice grain in total). It has become a standard method for stone analysis in foreign countries and is known as the fingerprint of the material. It is now widely used in clinical practice to identify the composition of stones and to guide the treatment and prevention of stones. Patients should take the initiative to collect stone specimens for examination after surgery or self-lithotripsy. The specific method is: after lithotripsy, urine will be dissolved into a spittoon, and the stones or lithotripsy powder will sink to the bottom, rinse them off with water, remove and dry them, and send them to our urology department, and the results will be available within 10 minutes. Pictures and diagrams of various stone components.