Carbon crystal composite insulation board

The utility model discloses a carbon crystal composite insulation board, which comprises a carbon crystal electric hot plate group and a plate shell coated outside the carbon crystal electric hot plate group, the plate shell is formed by compression molding of glass fiber reinforced plastics, and a reflecting layer and an insulation layer are arranged between the inner wall of the plate shell and the carbon crystal electric hot plate group. The carbon crystal electric heating plate set is composed of a plurality of transversely and longitudinally arranged carbon crystal electric heating plates in a staggered mode, a plurality of heating cabins are formed in a surrounding mode, meanwhile, the carbon crystal electric heating plate set is symmetrically divided into two heating cabins with heating areas through a middle frame plate, and a junction box is installed in at least one heating cabin. The junction box is provided with a power line electrically connected with the carbon crystal electric heating plate, a