High blood glucose in late pregnancy may have no obvious symptoms, or there may be symptoms such as excessive drinking, excessive eating, excessive urination, abnormal fetal development, etc. It is recommended to consult a doctor in time. High blood sugar during pregnancy can have symptoms of diabetes, such as excessive drinking, excessive eating, excessive urination, weight loss, blurred vision, etc., and some patients may also have no obvious symptoms; in addition, elevated blood sugar may also affect fetal development, and excessive amniotic fluid, macrosomia, and obstructed labor may occur. Patients with elevated blood glucose in late pregnancy need to follow the doctor’s instructions and take active treatment, through dietary control, such as controlling the total calorie intake, avoiding high-sugar, high-fat foods, and appropriate exercise, such as walking, etc., and if necessary, insulin treatment, to return to normal blood glucose levels. Pregnant women with abnormal blood glucose are advised to go to the hospital and ask the doctor to make a judgment and give a treatment plan.