It is possible, but less likely, that an 11mm urinary stone will pass on its own. Extracorporeal lithotripsy or minimally invasive surgery is usually required to remove the stone. For urinary stones up to 6mm, it is usually possible to expel them by drinking plenty of water and doing appropriate activities to promote stone expulsion, which is more likely to happen on its own. However, if the stones are large, extracorporeal lithotripsy is recommended, i.e., the machine focuses on the stone and then repeatedly releases energy to break the stone into small fragments for expulsion. If extracorporeal lithotripsy is ineffective, combined with the location of urinary stones, we can consider ureteroscopy lithotripsy and other minimally invasive surgical procedures, usually with fast recovery and minimal damage. If you have urinary stones, it is recommended that you do not blindly use medication on your own, but follow your doctor’s instructions and standardize your medication.