The ratio of urine microalbumin to urine creatinine should be less than 30. if it is greater than 30 and less than 300, it is a small amount of proteinuria; if it is more than 300, it is a large amount of proteinuria. This indicator can reflect the amount of urine protein quantification to a certain extent, correlates well with 24-hour urine protein quantification, and can be used as an indicator to assess the leakage of urine protein quantification. This test is easy to collect, and it is not necessary to collect a day’s worth of urine, and it is best to collect morning urine for examination, which is still relatively accurate and convenient, so it is now widely used in clinical practice. For positive proteinuria, further examination of renal puncture is needed to clarify the specific pathological type, and according to the different types, different treatment plans are chosen, which require the application of hormones, immunosuppressants, or simple application of ACEI or ARB-type drugs, and regular review of relevant indicators.