This product is suitable for the treatment of type 2 diabetes. Monotherapy. This product is used as an adjunct to diet control and exercise to improve blood glucose control in patients with type 2 diabetes. When used in combination with metformin hydrochloride, if metformin hydrochloride alone cannot effectively control blood glucose, this product can be used in combination with metformin hydrochloride, on the basis of diet and exercise, to improve blood glucose control in patients with type 2 diabetes. When used in combination with metformin hydrochloride and sulfonylurea drugs, if the combination of metformin hydrochloride and sulfonylurea drugs still cannot effectively control blood glucose, this product can be used in combination with metformin hydrochloride and sulfonylurea drugs, on the basis of diet and exercise, to improve blood glucose control in patients with type 2 diabetes.