Green tea generally can not lower blood sugar, no scientific reason and basis. Lowering blood sugar needs to be controlled and stabilized through the rational application of hypoglycemic drugs, diabetic diet and appropriate exercise. 1. Green tea does not have the role and efficacy of lowering blood sugar, and it is not recommended to believe in any folk remedies or health products. 2. Scientific and rational application of hypoglycemic drugs: metformin tablets, glipizide and other hypoglycemic drugs can be applied under the guidance of a physician, and at the same time can be combined with subcutaneous injection of insulin to synergize the treatment. 3. Diabetic diet and appropriate exercise: patients need a low-salt, low-fat, low-sugar, low-cholesterol diet, try to avoid greasy and sweet foods, meals are not recommended to eat too full, need to eat small amounts of meals; usually appropriate aerobic exercise is conducive to the stabilization of blood glucose, such as playing tai chi, swimming and so on. Lowering blood sugar, the treatment of diabetes need to go to a regular hospital, the physician according to the patient’s condition for treatment.