High urinary microalbumin refers to higher than normal values of albumin in urine, reflecting abnormal leakage of protein from human kidneys, which is firstly considered to be related to kidney disease and may also be related to urine concentration. Elevated microalbumin suggests that there may have been early kidney disease, such as hypertension kidney damage, diabetic nephropathy and so on. After suffering from the above mentioned diseases, it will affect the normal function of the kidneys, which cannot absorb the protein and other large molecules in the urine normally. When you go to the hospital for corresponding examination, you will find high urine microalbumin. High urine microalbumin may also be caused by other reasons, so patients are advised to go to the hospital in time and choose the appropriate method of treatment.