Tea is a health product, drinking tea does not have the effect of lowering blood sugar, high blood sugar patients should consult a professional doctor to clarify the condition, follow the doctor’s instructions to standardize the treatment of lowering blood sugar. If high blood sugar is caused by diabetes, it is usually necessary to control diet, increase exercise and the use of hypoglycemic drugs and other methods of comprehensive treatment. Diabetic patients are recommended to choose a low-salt, low-fat, low-sugar, low-calorie diet, along with appropriate aerobic exercise, such as jogging, cycling, etc., and if necessary, follow the doctor’s advice to use metformin, insulin, etc. for treatment. Patients with high blood glucose can consult a professional doctor or dietitian to formulate an individualized diet plan, and follow the doctor’s instructions for medication.