Urine microalbumin 0.15g/24h is generally considered normal, but whether it is normal or not depends mainly on the cause of urine protein. If it is caused by physiological reasons, it is normal; if it is caused by pathological reasons, it is usually considered abnormal. When the protein concentration is greater than 100mg/L or 150mg/24h urine, the urine with positive protein qualitative examination is called proteinuria. Thus, when urine microalbumin 0.15g/24h suggests positive urine protein. Proteinuria can be divided into physiologic proteinuria and pathologic proteinuria. Physiological proteinuria is more common in the case of intense exercise, fever, etc., the patient’s kidneys have no organic lesions, without special treatment, after resting, the urine protein can usually turn negative, this situation is normal. Pathological proteinuria may be caused by organic lesions of the kidneys, usually persistent proteinuria, the common causes of glomerulonephritis, urinary tract infections, urinary stones, etc. This situation is not normal. This situation is not normal, need to clarify the cause of the disease, for the cause of the treatment. Urine protein may also have other causes, if the patient found urine protein positive, it is recommended to go to the regular hospital in time to improve the examination to clarify the cause of the disease, under the guidance of the doctor to targeted treatment or treatment.