Glucose + in urine is usually abnormal. Normal people have very little or no glucose in urine. If urine glucose + occurs, it should be reviewed as soon as possible and relevant tests should be improved, such as fasting blood glucose, postprandial blood glucose, glucose tolerance test, renal function, blood and urine biochemistry tests, etc., to rule out dietary factors, reagent contamination, human error and other factors, to clarify whether there is diabetes, kidney disease and other diseases. Positive urine glucose is not a criterion for diagnosing diabetes mellitus, it may also be caused by abnormal kidney function, and tubular reabsorption dysfunction caused by kidney disease may also lead to increased urine glucose. Glucose + in the urine should seek medical attention as soon as possible, improve the relevant examination, a clear diagnosis, and early treatment under the guidance of the doctor.