To spread a design freedom degree of a king pin shaft in a suspension device for a steered wheel.

In a suspension device 2 for a steered wheel supporting a wheel 10 to a knuckle 14, connecting it to a car body 20 through a suspension arm 18, a tip end of the suspension arm 18 and the knuckle 14 are connected by a joint part 22, 24, the joint part 22, 24 has the first joint part 24 having rotation 1 freedom degree around a suspension arm shaft in a tip end of the suspension arm 18 to be connected to a tip end thereof and the second joint part 22 having rotation 1 freedom degree respectively relating to a first shaft provided with an angle relating to the suspension arm shaft and a second shaft almost orthogonal to this first shaft to be connected to the knuckle 14.