The duration of stone removal pellets to promote the discharge of stones is uncertain and needs to be analyzed in relation to the size of the stones, mostly around 1-2 weeks, depending on the individual. Lithotripsy granules belong to Chinese medicine preparation, which can increase urine volume, relax smooth muscle, relieve spasm and pain, and promote stone discharge. Oral stone removal granules are mainly for small stones, especially for stones less than 1cm in diameter, and the time of stone removal is not clear, it may take a few days or 1-2 weeks. During the medication period, you should pay attention to drink more water and do more jumping movements, which can promote the stone discharge. When the stone is expelled, there is usually abdominal pain, hematuria and other manifestations, and grit-like material will appear in the urine. For stones larger than 1 cm in diameter, it is usually difficult to take medication to expel them on your own, and minimally invasive techniques such as extracorporeal shock wave lithotripsy or ureteroscopy or percutaneous nephrolithoscopy should be considered to remove the stones. It should be noted that stone removal pellets should be taken under the guidance of a doctor, and regular review should be made to clarify the stone removal.