Bladder stones are not a particularly serious disease. Bladder stones are a common disease in the urinary system, mainly caused by the migration of kidney stones down the ureters into the bladder. Another scenario is that obstructions in the urinary tract prevent urine from being completely expelled from the bladder, leading to the formation of bladder stones over time. The treatment for bladder stones is relatively simple. For bladder stones that are less than two centimeters in size, extracorporeal shock wave lithotripsy can be used. For bladder stones larger than two centimeters, minimally invasive surgery can be performed.