There is no such thing as the “fastest and most effective” way to treat hyperglycemia, but rather a combination of dietary therapy, exercise therapy, medication, and other means of treatment that should be adhered to over the long term in order to keep blood glucose within the target range and to monitor fluctuations in blood glucose on a regular basis in order to prevent complications. Diabetes is a disease that requires long-term management, cannot be cured, and requires active lifestyle improvement. Eat a sensible diet, control dietary calories and reduce the intake of high glycemic index foods. Exercise therapy to ensure proper exercise, weight control, and blood glucose monitoring before and after exercise. When diet and exercise therapy fail to bring blood glucose control up to the standard, treatment can be provided by oral hypoglycemic drugs and injection of insulin preparations, all of which should be used under the guidance of a doctor. Patients with high blood glucose are advised to consult a doctor in time to formulate a reasonable glucose-lowering program.