Protein kinase Cβ(PKCβ) is a classical PKC subtype,which can be induced and activated by hyperglycemia,leading to a variety of diabetes complications. Activated PKCβ causes endothelial dysfunction,induces white blood cell adhesion,regulates the ex-pression of cytokines and transcription factors through downstream signaling pathways,leading to macrovascular complications,such as atherosclerosis,cardiomyopathy and apoplexy and microvascular complications,such as diabetic nephropathy,retinopathy and pe-ripheral neuropathy. In this paper,the role of PKCβ in diabetic complications and its related research in clinical treatment were described.