The utility model discloses an inorganic pre-coating plaque blank door. The inorganic pre-coating plaque blank door comprises a blank door steel frame base layer (4), a blank door inorganic pre-coating plaque surface layer (5) and two aluminum alloy shell nosing strips (1). The blank door steel frame base layer (4) is fixed to a building structure through an upper door hinge (8) and a lower door hinge (8). The blank door inorganic pre-coating plaque surface layer (5) is fixed to the surface of the blank door steel frame base layer (4). The first aluminum alloy shell nosing strip (1) is fixed to a door hinge side wall face inorganic pre-coating plaque (2) of a blank door. The second aluminum alloy shell nosing strip (1) is fixed to an open end lateral side of the blank door inorganic pre-coating plaque surface layer (5). The two aluminum alloy shell nosing strips (1) can be completely hidden in the gaps in the two sides of the door after the inorganic pre-coating plaque blank door is closed. After the inorganic pre-coating plaque blank door is installed, the gaps in the two ends of the blank door can be completely hidden, so that decoration appearance is improved, and construction cost is saved.