Clinically, patients who are examined and found to have 8mm stones can choose extracorporeal shock wave lithotripsy to crush the stones into 2 or more segments if they are located in the kidney, both of which can be conservatively drained and wait for observation treatment. If the stone is located in the ureter and causes hydronephrosis at the same time, extracorporeal shock wave lithotripsy can be chosen for stones in the middle and upper ureter, and for stones at the end of the ureter can be observed in situ and treated conservatively for 2 weeks. And for more than 2 weeks complicating hydronephrosis, Holmium laser lithotripsy with ureteroscopy should be performed promptly to unblock the obstruction and save the kidney function. If there is a stone of 8 mm in the bladder, the patient in this case can undergo wait and see. In women, the stone can be expelled on its own, in men it can be treated empirically. If it is not completely expelled and is stuck in the urethra, the stone can be clamped out of the body by means of a cystoscope using surgical instruments.