Abstract: A hybrid material was prepared via meltblending method from glycidyl polyhedral oligomeric silsesquioxane (GPOSS) and bisphenolA dicyanate ester (CE). The structure of the hybrid was characterized by Fourier transform infrared spectrometer (FTIR), scanning electron microscope (SEM), and its properties were tested. It was revealed that the GPOSS could obviously accelerate the curing reaction of the resin. The toughness of the matrix was improved by GPOSS. The impact strength of GPOSS/CE hybrid materials was 238 kJ/m2, which increased 158 % compared with that of neat CE, when the content of GPOSS was 7 phr.