To provide a roof panel made of aluminum alloy capable of suppressing its partial deformation in the vertical direction on the roof panel design surface on the body side face when the roof panel has undergone an expansive deformation (thermal distortion) and of keeping the design quality of the roof panel.

The roof panel 1 is formed from aluminum alloy by folding the side on the body side face into L-shape to generate a side edge part consisting of a vertical wall 1b stretching approximately vertical and a flat flange 1c continued thereto 1b, wherein the flange 1c is furnished at a certain spacing with a plurality of beads in convex shape 2a, 2b, 2c, 2d extending in the direction fore and aft od the automobile body, and joining with side member outer panels etc. is generated in the flange flat portion 1c other than the convex beads.