If the kidney stone is smaller than 2cm in diameter, extracorporeal shock wave lithotripsy can be used to break the stone into small pieces and then assist with lithotripsy drugs such as urinary stone pills or lithotripsy granules to promote stone discharge. 2. 3. If the stone is purely uric acid, you can also choose to take drugs to dissolve the stone, such as oral allopurinol tablets or benzbromarone tablets, etc. After the blood uric acid level gradually decreases, the size of the stone may be reduced or dissolved, and then assist to drink more water and urinate more to expel the stone as soon as possible. 4. If the stone in the kidney is less than 6mm, it can be discharged by itself without drugs or extracorporeal shock wave lithotripsy, and by drinking more water and urinating more.