Islet β cell dedifferentiation is one of the important reasons leading to insulin secretion defect or insulin resistance in patients with type 2 diabetes mellitus(T2DM).HIF-1α/PFKFB3 signaling pathway is a newly discovered biological pathway related to T2DM,which is involved in the induction of islet β cells dedifferentiation by anaerobic glycolysis under high glucose environment.This article reviews the research progress of the role of HIF-1α/PFKFB3 signaling pathway in glycolysis induced islet β cell dedifferentiation.