Abstract: A vehicle reinforcing structure includes a roof member, a pillar member that has in its upper part an extension part that extends along the roof member, and a reinforcing member that is joined so as to bridge the extension part and the roof member. The reinforcing member has a first welded part welded to the extension part, and a second welded part welded to a front edge of the roof member. The first welded part and the second welded part are provided such that an imaginary area created with straight lines that connect the respective edges of the welded parts substantially fits within the area of the reinforcing member. The reinforcing member further has an open area on the vehicle interior side of the first welded part on the rear side of the second welded part, the open area being in contact neither with the pillar member nor with the roof member.