The normal range of urine microalbumin is <20mg/L or <30mg/24h, if there is any abnormality, you should pay attention to it and consult a doctor in time. Urine microalbumin can mainly reflect the early stage of kidney disease and kidney injury, its normal range is <20mg/L or <30mg/24h. If it exceeds the normal range, it may be due to physiological factors such as strenuous exercise or eating a high protein diet, or it may be due to pathologic factors such as hypertensive nephropathy, preeclampsia in pregnancy, diabetic nephropathy and so on. Most of the early urinary microalbumin suggests early nephropathy and renal damage, and the causes need to be identified in time to control the development of the disease. Patients are advised to closely monitor their urine microalbumin, and if any abnormality occurs, it is recommended to seek medical advice in time and standardize the treatment under the guidance of the doctor.