Stones stuck in the urethra take at least three days to be expelled naturally, but stones that cannot be expelled naturally need to be expelled by lithotripsy, which varies from person to person. The normal urethra has three strictures, and when the stone is large, it will get stuck in the narrow part, causing ureteral obstruction and edema and inflammation in the area where it is stuck, so it is necessary to drink more water to promote the stone to move down. When the stone starts to move, it can be completely discharged in about three days. For larger stones that cannot be discharged, extracorporeal lithotripsy is needed, and then most of them can be discharged by drinking more water. If the stone cannot be discharged by extracorporeal lithotripsy, Holmium laser lithotripsy is required. If there is local inflammation after lithotripsy, anti-inflammatory drugs should be applied to reduce the local inflammation and edema. The discharge time of the stone depends on the lithotripsy condition, and can be as fast as the same day, or as slow as a second lithotripsy, which can take about a week. In addition, it should be noted that patients need to be alert when stones block the urethra, as prolonged blockage can cause hydronephrosis and, in severe cases, kidney dysfunction, so it is important to eat lightly and drink more water during the blockage.