High urine microalbumin indicates that the kidneys have been damaged, because urine microalbumin is the most sensitive and reliable indicator for the detection of kidney disease, especially for the early diagnosis of diabetic nephropathy. However, it is important to avoid urine contamination and urine specimens should not be left for too long to avoid errors, affecting the test results and causing unnecessary tension. If high urine microalbumin is found, it is recommended to go to a regular hospital for a comprehensive examination to clearly diagnose the disease and then give reasonable treatment, do not let it go and miss the best time for treatment.