Kidney stone patients can take Chinese medicine to promote the discharge of stones, the exact time varies from person to person. If the stone is large, it is difficult to be treated conservatively with medication, and extracorporeal lithotripsy or surgery can be performed. Kidney stones are often formed by the accumulation of calcium oxalate, calcium carbonate and other crystalline substances, which can cause urinary pain, blood in the urine, nausea, vomiting, lumbar pain and other discomforts. If the stone is smaller than 6mm, it can be discharged through the ureter by itself, and it can be treated by taking Chinese herbal medicines such as Pai Shi Granules and Kidney Stone Granules, and the specific time of discharge varies from person to person. When the diameter of the kidney stone is large, you can carry out extracorporeal lithotripsy or surgical stone removal treatment. It is recommended that patients do not blindly use medication on their own, and go to the hospital for regular checkups to understand the situation of stone expulsion.