Urine glucose, also known as glucose in routine urine tests, is normally negative. If glucose appears positive in routine urine tests, diabetes mellitus may be present. Diabetes is a chronic metabolic disease dominated by elevated blood glucose. When blood glucose rises significantly, exceeding the ability of the renal tubules to reabsorb glucose, a positive urine glucose will occur. With different degrees of elevated blood glucose, urine glucose can be expressed as (+) to (++++). The following points need to be looked at in the routine urine examination of diabetic patients: 1. Urine glucose, also known as urine glucose, positive urine glucose indicates that blood glucose The diagnosis of diabetes needs to be based on fasting and postprandial glucose, and not on whether the urine is positive or not as a criterion for the diagnosis of diabetes. 2. urine ketone bodies, elevated urine ketone bodies indicate that the patient may have acute complications of diabetes, that is, diabetic ketosis or ketoacidosis. The urine protein may be positive in patients with long-term poor blood sugar control, suggesting the presence of diabetic nephropathy in combination. 4, other, red blood cells, white blood cells and bacteria in the urine suggest the presence of urinary tract infection in diabetic patients.