To prevent generation of noise during travelling, by forming an upper mount mechanism for supporting an upper part of a strut rotatably to a body, by a bearing body to which the upper part of the strut is mounted and fixed, and an elastic member which is kept into contact with the bearing body.

In a suspension device, a set plate 5 is fixed through an adjust bolt 6, in a condition that a bearing of a bearing body of a ball bearing 1 is formed on an inner face of a holder 2a of an upper attaching plate 2, and a bearing face 2b formed on an inner face of a holder 2a has a recessed part 2b-1. A lower inner circumfernetial face continued to the recessed part 2b-1 is formed on a cylindrical part 2b-2, a compression ring 7 is inserted into a lower part of the cylindrical part 2b-1, and the bearing body is pressed to the recessed part 2b-1. Further a stopper plate 3 is installed at a rear face side of the upper attaching plate 2, and the upper attaching plate 2 is fixed by a lock bolt 4 in such manner that it presses the compression ring 7.