Objective: To investigate the protective effect of 2,3,5,4'-tetrahydroxystilbene-2- O-β -D-glucoside (TSG on human umbilical vein endothelial cells (HUVECs) apoptosis induced by H2O2. Methods: HUVECs were treated with H2O2 (100,200,300,400,500μmol/L) for 24 hours, the optimal concentration of H2O2 was selected by MTT and Flow Cytometry. HUVECs weretreatedwithTSG (0.1,1,10,100μmol/L)for24hoursthenexposedtoH2O2 (100,200,300,400,500μmol/L)for24 hours, cellviability rates and apoptosis rates of different concentration of TSG pretrea...