The normal value of urinary microalbumin is usually less than 20mg/L, so 284mg/L belongs to the high situation, belongs to microalbuminuria, may be caused by physiological or pathological factors. 1. Physiological factors: the more common causes mainly include strenuous exercise, prolonged standing, high fever, cold and mental tension and other factors caused by elevated urinary microalbumin. 2. Pathological factors: more common in diabetic nephropathy, hypertensive renal damage, obesity-related nephropathy and metabolic syndrome-related renal damage, in addition to pre-eclampsia and so on. It is recommended that patients with elevated urinary microalbumin consult a doctor in a timely manner, and follow the doctor’s instructions to complete the relevant examinations in order to clarify the cause of the disease and standardize the diagnosis and treatment.