Abstract: Using MTS-810 material testing machine, Zwick-HTM5020 high speed tensile testing machine and split Hopkinson tension bar (SHTB) apparatus, combined with digital image correlation method, the tensile mechanical properties of the E glass fiber reinforced epoxy resin composites were studied systematically in the range of strain rates of 10^-3-2 400 s^-1.The stress-strain curves under different strain rates were obtained, and the influences of strain rate on tensile strength and fracture strain were investigated. The fracture morphology of the tensile specimen was analyzed, and the dependence of fracture mechanism on the strain rate was explored. The results reveal that the normalized tensile strength increases linearly with the logarithm of strain rate, while the normalized fracture strain decreases linearly with the log strain rate. Fractography shows that the main fracture mode of the specimen is shear fracture along 45° direction at low strain rate. With the increasing of strain rate, the fracture mode gradually transforms shear fracture to axial tensile fracture. At high strain rate, it is observed that a large number of glass fibers are broken, and the epoxy resin matrix has serious fragmentation phenomenon, which reflects the strong restraint effect between the epoxy resin matrix and the glass fiber.