Stevia cannot be used for lowering blood sugar, and needs to be regulated under the guidance of a doctor for lowering sugar treatment. Stevia is a kind of traditional Chinese medicine, which is the leaf of Stevia rebaudiana, a plant of the genus Zeylan, family Asteraceae. It has the effect of promoting the production of fluid to relieve thirst and lowering blood pressure. It is used as a main treatment for thirst and hypertension. Patients with diabetes should take glucose-lowering drugs such as glipizide, acarbose or insulin injection under the guidance of a doctor, maintain a healthy diet, control the intake of total calories and fat, and cooperate with appropriate physical exercise, all of which can help to lower blood sugar. Patients who need to lower blood sugar should standardize their treatment under the guidance of a doctor and follow scientific treatment.