The invention relates to a method of producing technical products, daily essentials and municipal appliances, especially an imitation sandstone product preparing method, firstly preparing raw material of each component, coating a first layer of raw material on the surface of the mould, solidifying at normal temperature, then coating a second layer of raw material to solidify at normal temperature, then coating a layer of raw material to lay glass fiber or glass fiber cloth on this layer, using enhancement layer of raw material to permeate, then solidifying at high temperature and opening the mould, then making the working procedures of sand blasting, finishing, colorizing, covering paint, etc, thus able to achieve a series of imitation sandstone products which have the advantages of lightness and thinness, strong photopermeability, sense of fineness, sense of reality and naturalness, corrosion resistance, shock resistance, etc.