PROBLEM TO BE SOLVED: To provide a curing material also serving as a packing material for a door having a packing function, a curing function at the time of construction, and further an auxiliary function for attachment of the door. SOLUTION: The curing material also serving as a packing material for a door comprises plate-like face protecting members 2 to be overlaid on respective decorative faces on a surface and a rear of a door body 1, corner pad members 4 which are respectively attached to two corners 8 on a lower part of the door body, can be drawn out horizontally, and serve to position the right and left of the door body 1 with respect to a door frame and to determine a height of the door body 1, and edge protecting members 3a, 3b with a U-shaped cross section, which are respectively fitted with upper, lower, left and right edges of the door body 1. The door body is attached to a predetermined position of the door frame with at least the face protecting members 2 and the corner pad members 4 attached, and after the door body is attached, the face protecting members 2 and the corner pad members 4 are removed.