Mulberry leaf tea belongs to a kind of beverage, and there is no evidence that it has therapeutic effect of lowering blood sugar. For patients who need to lower blood sugar, they should be treated by diet, exercise and medication. Diet should control the total calorie intake, reduce the intake of high-sugar, high-fat and high-calorie foods, and increase the intake of green vegetables and coarse grains. For exercise, aerobic exercise such as jogging and swimming can be chosen. On the basis of dietary treatment and exercise treatment, metformin, acarbose and insulin can be chosen for treatment, all of which can play a role in lowering blood sugar. Patients who need to lower blood sugar should be under the guidance of a doctor to standardize the treatment, only by drinking mulberry leaf tea can not lower blood sugar, please take a scientific approach to treatment.