The invention discloses a novel gypsum product and a preparation method thereof. The novel gypsum product is prepared from a combined material, wherein the combined material comprises gypsum mine and a covering layer covering the surface of the gypsum mine, the water absorption rate of a material of the covering layer is lower than 0.05%, and the thickness of the covering layer is smaller than 5 mm. According to the novel gypsum product and the preparation method thereof, gypsum, anhydrite and mixed gypsum can be comprehensively utilized, the energy consumption can be remarkably reduced, the gypsum can be effectively prevented from weathering hydrolysis in long-term application, and application and decoration effects are good.