AERODYNAMIC DEVICE FOR VEHICLE

PROBLEM TO BE SOLVED: To obtain an aerodynamic device for a vehicle, which strikes a balance between the improvement of aerodynamic performance and the securement of driving stability of a vehicle.SOLUTION: In the aerodynamic device for a vehicle, a front spoiler constituting the aerodynamic device and mounted along a vehicle width direction, includes: a fixing seat for being fixed under the floor of a front part of the vehicle; a vertical wall 22 of which an upper part is formed in a tilting wall 22A directed on both front and lower sides and a lower part is formed in an erected wall 22B shaped along a vertical direction; a longitudinal wall 24 overhanging forward from the lower end of the erected wall 22B; and a protrusion 26 that is protruded downward from the front end of the longitudinal wall 24, of which a front surface is formed in a slope 26A directed on both front and lower sides.