Based on the available evidence does not indicate that buckwheat tea has a hypoglycemic effect. For patients with elevated blood glucose, mainly with a reasonable diet, appropriate exercise with drug therapy, such as the above treatment effect is not good can also consider surgical treatment. 1. Reasonable diet and appropriate exercise: In normal life, dietary management should be strengthened. Low-sugar, low-salt, low-fat diet is the main, eat more fresh vegetables, but also should eat less and more meals, to avoid irregular diet and other bad eating habits. In addition to diet, it should also be accompanied by appropriate exercise. 2. Drug therapy: commonly used drugs are sulfonylurea, glinide, biguanide, α-glucosidase inhibitors and insulin, such as glibenclamide, reglanis, metformin, acarbose and insulin (subcutaneous injection), etc. The use of the above drugs needs to be under the guidance of a physician. 3. Surgery: If the above treatments are ineffective, metabolic (bariatric) surgery, pancreas transplantation and islet cell transplantation can be considered. The specific treatment plan should be based on the doctor’s guidance, do not self-medicate.