There does not exist any tea with the effect of lowering blood sugar, so there is no such thing as “what tea is the best for high blood sugar”. In normal life, people with high blood sugar can drink light tea without adding sugar or honey and other sweeteners, and they should take medication under the guidance of a doctor. For people with high blood sugar, lowering sugar is mainly based on reasonable diet, appropriate exercise with medication, such as the above treatment effect is not good, you 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.