People who join the medical examination will leave the urine routine, which is a routine examination, but normal entrants are in good health, so failing the urine test is actually not very common. Urine routine mainly reflects the function of the kidneys, once the urine routine fails, you need to consider whether it is caused by the error of the examination or the patient’s problem, especially some female patients, in the menstrual period to leave urine specimens failed, may be not to leave the middle urine, or not the morning after cleaning the vulva flow of the middle urine, it may be caused by contaminated bacteria, this time need to review, after the standard retention of urine can be. The clinical pathology is usually caused by kidney disease, and the urine routine mainly looks at the patient’s white blood cells, blood sugar, urine sugar, occult blood, red blood cells in the urine, protein and other indicators. If it is inflammation, it is generally less severe. If there is protein or hematuria, it is necessary to distinguish whether the patient has renal or post-renal hematuria, and at this time, a kidney biopsy or further examination is needed to confirm the diagnosis.