A motorcycle is provided with a cowling brace (1) having a sub-frame structure for attaching a cowling and a cowling peripheral part to a front head portion of a body frame of a motorcycle. The cowling brace is composed of a front brace member (12) integrally formed of a synthetic resin material, a rear brace member (13) assembled by using a metal material to be combined with the front brace member, a front fixture member formed integrally with the front brace member (12) and adapted to fix the cowling and the cowling peripheral part, and a rear fixture member formed to rear brace member and adapted to fix the rear brace member to the body frame (14) of the motorcycle.