Sealed splicing type insulation board

The utility model relates to the technical field of building external wall insulation boards, in particular to a sealing splicing type insulation board which comprises an insulation board body, a connecting protruding strip arranged on the side edge of one side of the insulation board body and a plurality of elastic clamping protruding structures arranged on the connecting protruding strip. A limiting groove is inwards formed in the side edge of the side, away from the connecting protruding strip, of the heat preservation plate body, the internal specification of the limiting groove is matched with the specification of the connecting protruding strip, a fixing plate is arranged in the connecting protruding strip, and the elastic clamping protruding structure comprises a plurality of compression springs perpendicularly and fixedly arranged on the plate faces of the two sides of the fixing plate. The wedge-shaped clamping blocks are arranged at the ends, away from the fixing plate, of the compression springs, t