A resin front end portion 3 is formed of a square-shaped frame structure having left and right side brace portions 10, a reinforcing bracket 15 is mounted on each of the side brace portions, the side brace portions are suspended by front side members 2 through the reinforcing brackets, the reinforcing bracket is fastened to the side brace portions at a position higher than upper ends 2a 1 of front end portions 2a of the front side members and at a position lower than lower ends 2a2 of the front end portions 2a, and upper block portions 13 are provided protruding outward in a vehicle width direction on upper parts of the side brace portions, and the reinforcing brackets and the upper block portions are fastened in a state of being overlapped with each other in a fore-and-aft direction of a vehicle.
