Many patients have a very low awareness of ureteral stones, especially those who do not have symptoms such as low back pain, think that the current can eat and drink, no big deal, do not need any treatment, very little understanding of the need for further treatment, especially the importance of surgical treatment. In fact, this is a wrong understanding of ureteral stones. When it comes to bilateral ureteral stones leading to anuria, “uremia” is immediately realized. We say that the ureter does not grow stones, ureteral stones are often caused by kidney stones that fall into the ureter. When the kidney stone first fell into the ureter, ureteral obstruction, triggering ureteral spasm, resulting in intolerable renal colic. At this time, if the timely use of antispasmodic, analgesic, dilation of the ureter drugs, back pain will soon disappear. Is it true that if the back pain does not come, do not continue to care about it? The answer, of course, is no. Ureteral diameter is very fine, only 5-7mm in diameter, there are physiological narrowing in three places: the renal pelvis ureteral junction; the second in the iliac blood vessels bifurcation, and the third for the bladder wall inside the section, of which the third is the thinnest part of the diameter of about 2-3mm. when the diameter of the crystalline stone in the diameter of less than 5mm into the ureter, the kidneys may fall into the low level of the ureter or the bladder, the patient only feel a mild discomfort or hematuria, or even the patient feels the pain. The patient only feels slight discomfort in the lower back or hematuria, or even no sensation at all, because it does not cause ureteral obstruction or hydronephrosis, and it is usually difficult to detect this kind of stone by ultrasound or CT examination. When the diameter is significantly larger than 5-9mm stones, short-term difficulties in self-discharge, triggering ureteral obstruction, mild hydronephrosis ultrasound is easy to find, often clinically conservative treatment is taken as the main, 2 weeks or so after a follow-up ultrasound to show the disappearance of hydronephrosis can be confirmed by self-discharge of the stone, this type of patients with more fortunate. Clinical often found many slightly larger or larger stones stay in the ureter for a long time and can not be discharged from the body, hydronephrosis into a gradually aggravating trend, patients sometimes have no symptoms at all, often unintentionally a physical examination only to find moderate-to-severe hydronephrosis, at this time found that the side of the renal function has been lost most of the time, even if treated in a timely manner can only be retained to only survive renal function, because the renal unit can not be regenerated, it is impossible to restore the original normal function of the kidney. It is impossible to restore the kidney function to its original normal state. Sometimes, the leakage of the house will not come back to the normal state. Some patients will find that when one side of the ureter is completely blocked, and the opposite side of the stone to “come to the party”, both sides are blocked, resulting in anuria, acute renal failure, need to spend several times the usual money to the emergency room to save their lives, put themselves in a state of distress. More unfortunately, some patients lack of routine medical examination, when found bilateral ureteral stones, bilateral kidney has been heavily hydrated, even if the stones are dealt with, perennial chronic renal insufficiency or sooner or later will enter the hemodialysis treatment, at this point the situation has been quite regrettable. Because some ureteral stones stay too long, has long been closely wrapped with the ureteral mucosa, the ureteral mucosa has been seriously damaged, the method of extracorporeal lithotripsy do not have to consider. Even if the skillful doctors remove the stone, but the ensuing ureteral scar stenosis appears, as if the stone still “stays” there, the hydronephrosis can never be improved, and cannot achieve the desired therapeutic effect, and there is no better way, always bothering the patients and urologists, many patients have to remove the side of the kidney. Many patients have to remove that side of the kidney. There are also a lot of patients with back pain, high fever, sepsis and other manifestations of the emergency room, that is because some of the ureteral calculi stay too long, fluid in the renal pelvis combined with infection, pus, especially the majority of female patients, a number of people for this in the Intensive Care Unit (ICU) rescue and spend a lot of money. All of the above shows that ureteral stones are harmful but not beneficial. Kidneys are valuable and cannot be regenerated; ureters are fragile, when ureteral stones occur, they should be treated and followed up under the advice of specialists, so as not to lose the kidneys by carelessness. Early management means protecting the kidney and its function, reducing the occurrence of ureteral strictures and being in a safe environment.