The invention relates to a preparation method for a huge curved ceramic board painting. The preparation method comprises the following steps of firstly, calculating Moh's hardness and flexural strength parameters of a ceramic board, and determining maximum size data of the parameters; secondly, measuring and calculating the compressive strength of the ceramic board, and during sintering, adding toughening and moisturizing chemical additives in a ceramic biscuit; thirdly, performing heat treatment on the chemical additives of the ceramic board, removing the added additives, and rapidly shaping in the high-temperature process; fourthly, measuring and calculating a curvature radius parameter of a mold bent surface by adopting a lightweight high-temperature-resistant combined die of which an upper die is connected with a lifting mechanism; fifthly, placing the die and the ceramic board into a roller hearth kiln, and heating to a predetermined temperature, and enabling the ceramic board to be downward bent and attached to the surface of the die. According to the huge curved ceramic board painting disclosed by the invention can be made into large size and is not easy to break; the consistency of the curved surface size in the burning process is guaranteed.