The influence of the forging technical(methods) on the microstructure and dynamic properties of TC4 titanium fan blade is investigated in this paper. The results show that with the increase of primary αphase proportion the adiabatic shear susceptibility of TC4 fan blade is decreased and the absorbed impact energy is increased apparently. When the billet forge temperature higher than the moulding forge temperature, produce two different size primary αphase which reducing the uniform plastic defromationability of the material. Therefore, the impact resistance ability is reduced. So, for the sake of better dynamic properties should adopt lower moulding forge temperature at the same time ensure the billet forge temperature higher than the moulding forge temperature for the TC4 titanium fan blade.