Kidney stones larger than 1cm can’t be discharged by themselves in general. The diameter of normal ureter is about 0.3~0.4cm, and it may reach 0.5~0.6cm by expanding with some medicines, which can’t hold 1cm stone, so kidney stone larger than 1cm can’t be discharged in general. Kidney stones larger than 1cm need to be treated with the help of some other therapeutic measures, such as extracorporeal shock wave lithotripsy, or flexible ureterorenoscopy surgical stone removal and other measures. Under the guidance of the doctor, you should choose the appropriate treatment plan according to the size and type of stones. You should also pay attention to drink more water and do more exercise to promote the discharge of stones.