Abstract: The latent curing acceleration of the rare-earth organometallic compound (MrAn) for the anhydride/epoxy resin system was studied by DSC,TG and rotation viscometer,etc,and commparisons were made with the curing efficiency of terriary amine (DMP 30) in this paper.The results showed that the rare-earth compound served,an ideal latent accelerator for anhydride/epoxy resin systems,the overall curing process followed quasi-first order kinetics,and all total properties of the MrAn catalyzed/anhydride/epoxy resin system were better than those of a DMP-30 catalyzed one.