In general, a (+) urine sugar test is not a definitive diagnosis of diabetes and is considered to be a high-risk condition, and certain tests related to diabetes are required for qualitative and quantitative diagnosis. Patients with diabetes can also have a urine sugar (+), but patients with urine sugar (+) do not necessarily belong to diabetes, but may also belong to pre-diabetes, such as impaired fasting glucose, abnormal glucose tolerance, or because of impaired kidney function, the recent high sugar content in the diet can lead to the clinical symptoms and performance of urine sugar (+). It is recommended that patients should have fasting glucose and 2-hour postprandial glucose tests, and glycated hemoglobin should also be checked, and OGTT release test and insulin C-peptide release test are recommended to confirm the diagnosis.