The utility model discloses a novel big mould built -in insulation board fixer belongs to the technical field of insulation board, and the utility model discloses a template one and template two and the insulation board between template one and template two, the periphery of insulation board is equipped with concrete pouring layer, and the insulation board is fixed with template one through fixer, and the fixer includes pre -buried nail and positioning column. The utility model discloses through installing pre -buried nail on template one, installs positioning column on the insulation board, and positioning column is equipped with elastic connecting piece, when installing insulation board, only need to make insulation board with template one alignment, ensure that the position of positioning column can butt -joint with pre -buried nail, press insulation board just can make positioning column insert into the jack, and elastic connecting piece is locked into locking groove, can realize the fixation of insulation board, compared with the mode of adopting the turn silk binding in the prior art, and its operation efficiency greatly improves, has the
advantage that saves time and labour.