Urine microalbumin greater than 200mg/L suggests positive urine protein, which is considered microalbuminuria. It may be caused by physiological reasons such as fever, strenuous exercise, or pathologic reasons such as glomerulonephritis and urinary tract infection. 1. Physiological reasons: excessive consumption of high-protein food, strenuous exercise, fever and other reasons may cause urinary microalbumin to rise, urine microalbumin greater than 200mgmg/L. Usually, no special treatment is needed. Usually there is no need for special treatment, after rest, the urine protein can usually turn negative. 2. Pathologic causes: (1) Glomerulonephritis: glomerulonephritis can make the filtration function of the kidney impaired, and the urine microalbumin is abnormal in the test, and the urine microalbumin is greater than 200 mgmg/L. (2) Urinary tract infection: Urinary tract infection may increase the level of microalbumin, and the urine microalbumin is greater than 200mgmg/L. The urine microalbumin may be greater than 200mgmg/L. The urine microalbumin is greater than 200mgmg/L. Urine microalbumin greater than 200mg/L may also have other reasons, it is recommended that patients go to the regular hospital in a timely manner to improve the examination to clarify the cause of the disease, under the guidance of the doctor to targeted treatment or treatment.