Gallbladder stones cannot be knocked out, because the biliary system is a relatively special system, it is different from the urinary system, urinary stones can be broken up by extracorporeal lithotripsy, the stones are broken up and excreted through urine, but gallbladder stones cannot be broken up. Generally, if you have gallbladder stones with no symptoms and relatively small stones, you can observe them regularly. If gallbladder stones are combined with cholecystitis, the clinician recommends surgery, because stones exist in the gallbladder for a long time and can irritate the gallbladder wall for a long time, causing recurrent attacks of cholecystitis. Therefore, surgery is recommended for stony cholecystitis. Gallbladder stones cannot be discharged through extracorporeal lithotripsy, which means that gallstones cannot be knocked out.