To provide a decoration helmet allowing promotion of an aesthetic sense of an brim part and flap parts, and capable of being strongly used over a long period without excessive deformation of the brim part and the flap parts.

In this decoration helmet, the brim part 2 is provided in the front face of a lower part of a helmet 1, a neck plate part 3 is provided from the rear face of the lower part to both the faces of the lower part of the helmet 1, the flap parts 4, 4 are provided from both the ends of the neck plate part 3 on both the sides of the brim part 2, and a fastener string 5 is exposed from the rear face of the helmet 1. Cross-sectionally U-shaped decoration cover edge parts 8 having insertion gap parts 7 for a front end edge part 6 are fittingly installed to the front end edge part 6 of the brim part 2. In the decoration cover edge part 8, a large number of extrusion pattern parts 11 are formed between both end face parts 10, 10 in both the ends in the longitudinal direction of a metal elongated member 9. The decoration cover edge part 8 is bent in a U shape with a longitudinal center part 13 of the metal elongated member 9 as a center so that projection parts 12 of the pattern parts 9 appear on the outer surface, and is formed with the insertion gap part 7.