Corner connecting mechanism of composite heat preservation integrated plate

The utility model discloses a corner connecting mechanism of a composite heat preservation integrated plate. The insulation board comprises an insulation board body, a first connecting piece and a second connecting piece, a plurality of groups of first connecting pieces and second connecting pieces are arranged; the first connecting piece is fixedly connected with the second connecting piece through a second tapping screw; the first connecting piece and the second connecting piece are arranged in a right-angle structure; a mounting cavity for mounting the insulation board body is defined by every two adjacent groups of first connecting pieces and second connecting pieces; the multiple sets of heat preservation plate bodies and the multiple sets of mounting cavities are arranged in parallel, sealing stickers are fixedly glued to the sides, away from the mounting cavities, of the heat preservation plate bodies, second connecting grooves are formed in the positions, where the second connecting pieces are located