For kidney stones with urinary obstruction, it is mainly due to the displacement of the stone into the ureter, and since the size of the stone is larger than the diameter of the ureter, local obstruction and jamming will be formed, resulting in hydronephrosis. The patient will feel soreness, fullness and pain in the corresponding stone area, and this symptom is mainly caused by hydronephrosis. There are also times when the longer duration of urinary obstruction leads to infection after hydrocele has passed, and this condition will cause obvious pain, soreness and swelling in the lower back or systemic symptoms, such as fever, nausea, vomiting, loss of appetite, and loss of physical strength. Kidney stones need to go to the hospital in time for examination to determine: first, to clarify the size and location of the stones. Second, to clarify whether it is accompanied by other complications, such as urinary tract infection, ureteral stenosis. In this case, if the stone accumulation time is longer, the obstruction is more serious, and even cause obvious damage to renal function, such as thinning of the renal cortex, the obstruction should be relieved in time, such as extracorporeal shock wave lithotripsy. If the effect of shock wave lithotripsy is not good, ureteroscopic lithotripsy will also be performed.