To provide a straightening type front axle of a vehicle capable of improving fuel consumption of the vehicle by reducing aerodynamic drag when the vehicle is traveling.

The invention of Claim 1 comprises a front axle, and a straightening belt material with a triangle cross section adhered on a front wall of the front axle with its tip directed frontward. The invention of Claim 2 comprises the front axle; a straightening belt material with a triangle cross section formed of a flexible resin and arranged on the front wall of the front axle with its tip end directed frontward; and a band fastening the outer periphery of the front axle and the straightening belt material.