The normal value of urine microglobulin is less than 20ug/min. If the basement membrane of the kidney is damaged and the permeability is changed, urine microglobulin will be increased, which is more sensitive than urine protein in urine routine, so it can predict whether the kidney is mildly damaged earlier than urine protein. If elevated urinary microglobulin is detected in time, timely intervention or treatment can reverse the kidney function or even cure it completely, so urinary microglobulin is a very important indicator. In addition to glomerulonephritis, diabetic nephropathy, hypertensive nephropathy, hypertension, and pre-eclampsia can all lead to elevated urinary microglobulin.