Kidney stones with hydronephrosis, how to discharge, need to be based on the results of the specific examination to decide: 1, if the kidney stone disease primary disease, hydronephrosis for secondary disease, then only need to deal with kidney stones, then hydronephrosis does not need to deal with can be cured. Because of the hydronephrosis, it is the blockage of the ureter or renal pelvis outlet caused by the stone and caused by the hydronephrosis. When the stone is removed, after the blockage is removed, the fluid can be naturally drained through the ureter without any treatment; 2, if there is first fluid as the primary disease, and then the secondary stone is formed, then you need to drain through the ureteral stent tube, renal puncture fistula, or surgical methods to remove the fluid and remove the stone. Because there is fluid first, the fluid precipitation for a long time, so the formation of kidney stones, if only deal with kidney stones, fluid can still exist. It is usually caused by urinary tract stenosis or congenital diseases, or reflux disease. According to the relevant examination, we need to clarify the cause of the disease and then deal with the symptoms. For example, in congenital diseases, we need to lift the congenital obstruction through surgery to restore the smoothness of the urinary tract, and the fluid retention can be restored to the normal state. However, in the case of reflux disease or other causes of fluid retention, it is necessary to relieve the fluid retention through drainage and fistula.