Urine microalbumin 3000μg/min is a large amount of proteinuria, which is more commonly caused by diabetic nephropathy, chronic glomerulonephritis, malignant hypertensive nephropathy and so on. The filtration membrane of the kidney is highly permeable to water and toxins, while it is less permeable to large molecules like albumin, allowing only a small amount of albumin to pass, with urine microalbumin below 30μg/min. If it is between 30-300μg/min, it is called microalbuminuria; if it is more than 300μg/min, it is called massive proteinuria. From here, it can be seen that 3000μg/min is far more than 300μg/min, which is considered massive proteinuria. Urine microalbumin is mainly to detect some early kidney diseases, such as chronic glomerulonephritis, diabetic nephropathy, hypertensive nephropathy, especially the early stage of diabetic nephropathy. If there is a large amount of albuminuria, you need to actively search for the cause and give treatment, the more commonly used drugs are valsartan capsule and benazepril tablets.