Routine kidney examination mainly includes urine examination, glomerular and tubular function examination and imaging examination. The kidneys are evaluated from different aspects, for example, urine examination commonly includes urine routine can check red blood cells, white blood cells, urine protein and urine specific gravity in urine. When other kidney problems are suspected, these items such as urine sediment and urine protein quantification will be further checked. As for the examination of glomerular and tubular function, there are mainly blood sampling for kidney function, including blood creatinine, urea nitrogen, uric acid, cystatin, and urine β2 microglobulin can also be checked in urine. There are also special tests, such as renal concentration and dilution function to assess tubular function, each of these tests has its own focus. There are also renal ultrasound, CT, and intravenous pyelogram, which can be used to understand the morphology of the kidney, to understand whether the pelvis and calyces are regular, and to clarify other problems.