To perform the treatment of the end of a skin in a door trim composed of a backing and the skin which covers the backing without any troublesome rolling work.

The end of a backing 11 is folded to the back side of the backing 11 with a skin 12 around a groove part 11a which is formed at a prescribed distance from the end margin of the backing on the surface side of the end of the backing 11 to form an overlap parts, which are fixed by fixing means 13a, 13b formed on each overlap surface. In a door trim of such constitution, when the end of the backing 11 is folded to the back side of the backing 11 together with the skin 12 to form an overlap parts, the overlap state can be held firmly by the action of the fixing means 13a, 13b. The folding treatment is a much easier work in comparison with conventional end treatment.