The invention discloses a power generation plate with a building material appearance and a preparation method thereof. The power generation plate with the building material appearance is provided withan optical adjustment layer, wherein the optical adjustment layer is a semitransparent medium material, the weighted average transmittance in the wavelength range of 380 nm to 1250 nm ranges from 10%to 85%, and the haze is 10% to 95%; and the power generation plate comprises a substrate, a power generation layer and the optical adjustment layer. The artistic ornamental value and the protection performance of the optical adjustment layer are applied to the field of solar batteries, so that the building art and the power generation performance are fused, and the requirements of green buildingsand environment-friendly buildings are met.