To enable a roof molding to be fixed under a stable attitude even if a panel shape varies in a longitudinal direction of a roof groove.

A roof molding 14 is provided with a roof side leg 23 having an abutment lip 27 and a side leg 24 having an engagement part 32. The abutment lip 27 is provided with a root 28 enabling the abutment lip 27 to be displaced, a supporting part 29 extending out of the root 28 and an abutment part 30 protruded out of the tip of the supporting part 29 and abutted against an upright wall 18. The abutment part 30 protruded out of the tip of the supporting part 29 displaced to fold back toward the side leg 24 abuts against the upright wall 18, thereby the abutment part 30 and the engagement part 32 oppositely face each other un a state that the abutment part 30 is displaced up to a position near the engagement part 32. Then, the abutment part 30 and the engagement part 32 oppositely face each other to press the upright wall 18 from its both sides and hold it so as to attach and fix the roof molding 14 to the upright wall 18.