Kidney stone 5mm, not big, belongs to the relatively small stone, its impact on the body is relatively small, and the chances of draining out by itself are relatively high. It is recommended to drink more water, more than 2500ml per day, more exercise, especially jumping exercise. In addition, with the stone pellets, potassium citrate oral. After this treatment, the chance of the stone being discharged by itself is very high. If it can not be discharged, you can inject atropine intravenously, which has the effect of stretching the smooth muscle of the ureter and can help the stones to be discharged. If there is pain during the gradual downward movement of the stone, indomethacin suppositories and pethidine can be used for pain relief. If the stones still cannot be expelled, it may be necessary to resort to extracorporeal shock wave lithotripsy, a treatment that involves pulverizing large stones into smaller ones before expelling them from the body.