Abstract: The γ-(2,3-epoxypropoxy) propytrimethoxysilane(KH560) graphene oxide (FGO) was prepared and characterized with FTIR and TGA. With the addition of FGO into radical-initiated and cationic-initiated photosensitive resins (CRCPR), the viscosity, gel rate and volume shrinkage of FGO/CRCPR were investigated. The mechanical properties of FGO/CRCPR composites were tested. The results show that compared with graphene oxide (GO), the viscosity doesn't markedly increase with the addition of FGO and the gel rate also doesn't reduce significantly, indicating that FGO has a good compatibility with the matrix. The results indicate that the volume shrinkage decreases by 37%, the tensile, the bending and the impact strength of the cured nano FGO/CRCPR composites, increase by 71.8%, 26.9% and 49.7% respectively, when the mass fraction is 0.06%, due to the excellent mechanical properties of FGO itself, the good compatibility of FGO with the matrix and the strong interface bonding between FGO and the matrix.