The metasurface is composed of a large number of sub-wavelength unit structures, which has received wide attention in the fields of holographic display and functional encryption due to its smaller structure size and more flexible modulation capability. And it has been extended to a more elaborate design for the increasingly demanded information-carrying capability. In this work, a dual-band four-channel reflective metasurface that operates simultaneously in the visible and near-infrared light is designed using heterogeneous meta-atoms and polarization-multiplexed holography. Hydrogenated amorphous silicon (a-Si: H) and Au are interleaved in the same plane, and the properties of the composite phase modulation determine the dimensional parameters of the two materials, which modulate the polarization distribution of the holograms using an optimized Gerchberg-Saxton algorithm based on quadratic phases. The designed dual-band multi-channel metasurface may provide a new avenue for device integration and enhancement of anti-counterfeiting technology.