The invention discloses a novel composite thermal insulation board, comprising a shell, a groove and a cavity are respectively opened in the top surface and side wall of the shell, and a screw rod is engaged and sleeved on the top surface of the shell. The other end of the screw rod extends into the cavity one, and the extending end of the screw rod is rotatably connected with a pressure rod one, the side wall of the pressure rod one is fixed with a sliding rod one, and the other side of the sliding rod one is connected. One end is slidably connected with the side wall of cavity 1, and a spring 1 is installed between the sliding rod 1 and the bottom surface of cavity 1, the bottom surface of the pressing rod 1 is in contact with a push rod, and the other end of the push rod extends to In the groove, and the extending end of the push rod is fixed with a clamping block; the invention can replace the pattern on the surface of the composite insulation board, avoid the abandonment of the whole board, reduce the waste of resources, reduce the cost consumption, and make the internal resistance of the board. Therefore, the plate has the ability to resist impact, and at the same time, the pulling and deformation of the plate is avoided, so that the plate is not easy to be damaged, and the property loss is reduced.