There is a possibility that a 0.8cm stone in the lower ureter can be expelled on its own, but this is generally unlikely. Since there are three narrowing of the ureter, and the diameter of the narrowing is less than 0.5cm, the possibility of self-discharge of 0.8cm stone is relatively small, and extracorporeal shock wave lithotripsy or transurethral ureteroscopy laser lithotripsy is usually recommended. 1. Extracorporeal shock wave lithotripsy: Extracorporeal shock wave lithotripsy is generally the preferred surgical method for 0.8cm stones in the lower ureter. Attempts can be made to break up the stone to promote lithotripsy. 2. Transurethral ureteroscopy laser lithotripsy: If the patient’s stone has been embedded for a long time, and the effect of extracorporeal shock wave lithotripsy is not good, transurethral ureteroscopy laser lithotripsy is feasible, and the stone is crushed and taken out by laser through the visualization mirror. The specific treatment plan depends on the patient’s physical condition and the specific location of the stone, it is recommended to go to the hospital as soon as possible.