To improve fatigue strength and prevent cracking in a vehicle wheel which is a product obtained by forging or casting which is more suitable for mass production than forging.

A light alloy product has a compressed stress remaining at a part located at a depth of 500 to 6,000 m from the surface. The light alloy product is manufactured through a step of blasting the surface thereof with a shot material containing at least a sphere or a polyhedron having a specific gravity of 2 and more and a diameter of 5 mm and more.