Extracorporeal Shock Wave Lithotripsy (ESWL) is suitable for kidney stones and upper ureteral stones with a diameter of 6mm~20mm. 1. If the stone is less than 6mm, it can be discharged by drinking more water and exercising properly, so there is no need for extracorporeal lithotripsy. Even if the stone is crushed in vitro, due to the relatively small stone, it is difficult to locate the stone, and the treatment effect is not good. 2. If the stone is larger than 20mm, it will cause difficulty in lithotripsy, even if the stone is crushed, the process of lithotripsy is relatively long, and the process of lithotripsy may also block the ureter to cause fluid retention, infection and other complications, and even the formation of stone streets. 3. Extracorporeal shock wave lithotripsy is not recommended for lower ureteral stones because of the anatomical factors that make it difficult to locate the stones. The size of the stone is not the only criterion for determining the appropriateness of extracorporeal lithotripsy, but also to understand whether there is infection, the stone exists in the ureter for a certain period of time, the patient’s coagulation function, and whether there is any heart disease. For urolithiasis patients need to be treated under the guidance of a doctor. For patients who are not suitable for extracorporeal lithotripsy, they can first choose surgical treatment, such as percutaneous nephrolithotripsy, ureteroscopy laser lithotripsy, etc. If they feel unwell, they need to consult a doctor. If the patient is not feeling well, he should consult the doctor for examination and early treatment.