The common clinical causes of recurrent fever caused by kidney stones are as follows:1. Kidney stones secondary to pyelonephritis, renal pus accumulation or even urogenital septicemia, which may be manifested by chills, high fever or infectious shock.2. Existence of ureteral obstruction, poor drainage of urine, accumulation of urine in the renal pelvis, increased pressure in the renal pelvis, easy reproduction of bacteria and toxins into the blood causing fever.3. Ureteral lithotripsy treatment with flexible mirrors or percutaneous nephrolithotripsy Ureteral lithotripsy or percutaneous nephrolithotripsy, which requires continuous pressure flushing during the operation, or the operation time is too long, leading to bacterial toxins into the blood and causing fever.4. Urine reflux, which is seen in the patients who often hold their urine or have urinary retention in the bladder.