If a pregnant woman is examined and urine glucose (+) is found, it is recommended to also complete a venous plasma glucose test, including fasting glucose and 2-hour postprandial glucose, and if necessary, an OGTT with 75 grams of glucose powder at 24-28 weeks of pregnancy to assess glucose tolerance. If elevated blood glucose is present, the diagnosis of gestational diabetes requires a controlled diet, appropriate exercise, and regular blood glucose monitoring. In patients whose blood glucose cannot reach the standard with lifestyle interventions, early application of insulin to lower glucose is recommended, with less impact on the fetus and mother. If high blood glucose is not controlled in time, preterm delivery, fetal malformation, excessive amniotic fluid, giant baby, intrauterine distress and other conditions may occur and have adverse effects on the pregnant woman. If the patient’s blood glucose is in the normal range and only urine sugar (+), there may be a problem with the renal sugar threshold. Patients are advised to drink more water, urinate regularly, and enhance personal hygiene to avoid urinary tract infections.