To extremely reduce a manufacturing cost while extremely shortening a manufacturing period in a method for manufacturing a heat protective panel.

In the method for manufacturing the heat protective panel 10 having a heat protective layer 20 and an outer panel 30 made of a composite material, a plurality of tile-like heat protective materials 21 are laid and temporarily fixed by a predetermined fixture to form a heat protective layer forming part 20' and one surface 20'A of the heat protective layer forming part 20' is collectively subjected to shaping processing. A prepreg 32 (32') for molding the outer panel is laminated on the surface subjected to shaping processing of the heat protective layer forming part 20' and molded into the outer panel 10 to be bonded to the heat protective layer forming part 20'. If necessary, the other surface 20'B of the heat protective layer forming part 20' is collectively subjected to shaping processing.