The invention relates to a continuous production process for polyurethane thermal insulation boards, belonging to a new process of continuous production of polyurethane thermal insulation boards. The invention aims to provide a continuous production process for continuously producing polyurethane energy-saving boards and is characterized by comprising the process routes of laminating dies on the inner wall of a frame, preinstalling lower die cement-fibre boards, preinstalling robot upper die cement-fibre boards, casting preparation, robot casting, compounding dies, heating curing, die sinking, taking pieces, cleaning dies, carrying down and circulating. The invention has the advantages that firstly, the operating mode of the continuous product line of the polyurethane thermal insulation boards is continuous production so that the production efficiency is greatly improved, the demands of domestic construction energy-saving markets can be satisfied, and the construction energy-saving project of China are greatly promoted; secondly, the continuous production process has good energy-saving and environment-protection effect, thereby making a contribution to establishing a resource saving and environment-friendly society; and thirdly, the process has stable and reliable production, guaranteed quality, high production capacity, high technical content, high degree of automation, low labor intensity and controllable quality.