Small stones can be drained by taking oral lithotripter, drinking more water and exercising more. 1, stone removal medicine: smooth stones less than 5 mm in diameter, if there is no obstruction in the urinary tract below the stone, and the stone does not cause complete obstruction, you can take stone removal flush, with more water and appropriate exercise, which will help the stone discharge. α-blockers and calcium ion blockers also have the effect of soothing the smooth machine and promoting the discharge of kidney stones to the ureter to the bladder and to the outside of the body. 2, drink more water: it is recommended to drink a lot of water, drink more than 2000ml of water per day, the urine discharged will be greater than 2000ml, effectively promote the discharge of stones. 3.More exercise: postural drainage: for stones located in the lower renal calyces, patients need to discharge the stones smoothly through inversion, healthy side lying position and patting the waist, after the stones reach the ureter, through jumping movements. The path of stone discharge is as follows: from the kidney to the ureter, through the ureter into the bladder, and then out of the body through the urethra. If the kidney stone is larger than 6mm, there is little hope of expelling it by itself, and extracorporeal shock wave lithotripsy is recommended before stone removal treatment. The process of stone removal should be monitored by a professional physician to determine whether the stone has been expelled through professional and fine imaging, and never discharge the stone by yourself.