A holographic waveguide display system using twice prisms for coupled input was proposed.The working principle of this system was introduced, the achromatic principle of the twice prism coupled input was designed and analyzed, and simulation analysis on the model was presented.The simulation results demonstrate that the system processes a FOV of 24°×20°, an exit pupil diameter of 40 mm, the distortion is less than 2%, and the MTF is higher than 0.7 at the spatial frequency of 30 lp/mm across the entire FOV, which satisfes the requirements of an optical imaging system.