The risks of minimally invasive kidney stone surgery are as follows: 1. ureteroscopic lithotripsy: the risk is low; common postoperative complications are hematuria and urinary tract infection, which can be relieved by patients through anti-inflammatory and hemostatic treatment; occasional complications such as ureteral injury and avulsion can be prevented by placing double J tubes at the ureter, which can prevent narrowing of the ureter during the recovery process; 2. percutaneous nephrolithotripsy: the surgery is invasive and slightly more risky than ureteroscopic lithotripsy, and common postoperative complications are perirenal hematoma.