Inflammation of the ureter can lead to inflammatory strictures, which can cause hydronephrosis and low back pain. Ureteritis is not one of the routinely seen urinary tract infections. Pyelonephritis and acute cystitis are routinely seen, but ureteritis is rare. Ureteritis to review the urine routine will find increased red and white blood cells in the urine, while doing a urological ultrasound will find hydronephrosis, and further examination may find that the lumen of the ureter is narrowed, which is caused by inflammation of the ureteral stenosis. At the same time, if the ureteral stone is embedded, it can also cause inflammation of the ureter, the embedded location of inflammation, check the urine routine when the urine red blood cells, white blood cells are increased. The simple inflammation of ureter, anti-inflammatory treatment can be, when caused by obstruction, caused by stenosis, the obstruction and stenosis of the location of the solution, otherwise the damage to the kidneys is very big.