Urine microalbumin 40mg/L usually does not require treatment if it is due to physiologic causes. Most of the pathologic causes can be cured, but some patients will continue to urinate microalbumin. Urinary microalbumin is an indicator of early glomerular injury, and the general normal range is <30mg/L. Common causes include physiologic factors such as strenuous exercise, and pathologic factors such as early diabetic nephropathy, hypertensive nephropathy and interstitial nephritis. Physiological factors: if it is caused by strenuous exercise, eating large amount of meat, etc., it usually does not need special treatment, pay attention to rest, light diet, and pay attention to review, and it can be restored to normal in general. Pathological factors: If the urine microalbumin is high due to diabetes mellitus, it is necessary to strictly monitor blood glucose and use hypoglycemic drugs, such as metformin and dagliflozin. If the high urine microalbumin is caused by hypertension, it is necessary to strictly monitor blood pressure and apply antihypertensive drugs, such as valsartan. If it is caused by interstitial kidney disease, it is necessary to control the condition with hormones, such as prednisone. At this time, the amount of urinary microalbumin is small, belonging to the early stage of the disease, after active and effective treatment, most can be cured. However, some patients will continue to urinate microalbumin. Urine microalbumin abnormalities, it is recommended to go to the hospital, identify the cause of the disease, and follow the doctor's instructions for standardized treatment.