If the stone is not discharged even after three days of lithotripsy, it is mainly considered to be related to stone adhesion, improper prognosis and other factors. 1. Stone adhesion: the stone forms adhesion and incarceration with the surrounding tissues in the body, and after lithotripsy, the stone can not move smoothly, and then there is a delay in discharging the stone. 2. Improper prognosis: after lithotripsy, the patient does not increase drinking water in time and does not carry out corresponding exercises, which will affect the movement and discharge of stones, resulting in the phenomenon of stones not being discharged. 3. Other factors: such as ureteral inflammation, edema symptoms, which leads to ureteral stenosis, affecting the discharge of stones; or stone formation “stone street” can not be discharged. If the stone is not discharged after three days of lithotripsy, it is recommended that you consult a doctor in time for a review, and after clarifying the cause, you will be able to deal with the problem.