The fields-of-view of volume holographic waveguide display systems are often limited by the grating diffraction response bandwidth, which still cannot meet people’s needs for large field-of-view display. In order to expand the field-of-view of the waveguide display, the influencing factors of the field-of-view of the waveguide display are analyzed based on the strictly coupled wave theory model, and a double-layer volume grating waveguide structure that can effectively expand the diffraction response bandwidth is proposed. The grating is prepared by the variable-angle fractional exposure method, and the holographic waveguide display system is built. The imaging results show that the horizontal and vertical fields-of-view of the display system can be expanded to 33.4° and 22.6° respectively, and the diagonal viewing angle is 40.3°.