A decorative member can be readily attached to an airbag cover of an airbag device and attaching workability is enhanced. A decorative member 10 is attached to an attaching part 3 of an airbag cover 1, and engaging projections 13 of the decorative member 10 pass through through-holes in the airbag cover 1 to the back face 1B of the airbag cover 1. A holding member 20 is bent and pressed against the airbag cover 1 side, so that the engaging sections 21 are moved from a state where they are approached to each other between the engaging projections 13, to the direction in which the engaging sections 21 separate from each other. Consequently, the engaging sections 21 are inserted to engaging holes 13K to be engaged with the engaging projections 13. The holding member 20 allows the decorative member 10 to be attached to the airbag cover 1 through the engaging projections 13.