High microalbumin refers to the concentration of microalbumin in urine exceeds the normal value in urine examination. The vast majority of high urinary microalbumin is caused by kidney disease, and patients may have symptoms such as edema, proteinuria, hypertension, back pain, and frequent urination. Urine examination in patients with kidney disease suggests that urine microalbumin is elevated, and the typical clinical symptoms of patients are hematuria, proteinuria, edema, hypertension, lower back pain, and bladder irritation signs such as frequent urination, urinary urgency, and urinary pain can also occur. In severe cases, nausea, vomiting, skin itching, dyspnea and other symptoms may also occur. In addition, high urine microalbumin may be a false positive result caused by consuming food with high protein content before the test, or by substandard urine specimen retention. At this time, the patient may not show obvious symptoms. When patients find high urine microalbumin, they should consult the doctor in time, complete the relevant examinations, make a clear diagnosis, and actively cooperate with the doctor’s treatment.