There is provided a lancet device comprising a pricking part and a pressing part. In the lancet device of the present invention, the pricking part is comprised of a needle shaft component equipped with a pricking needle, a driving shaft component, and an intermediate shaft component therebetween, the needle shaft component, the driving shaft component and the intermediate shaft component being connected to each other via a joint component. When a pricking operation is performed, the driving shaft component of the pricking part is at least partly rotated by being pressed by a pressing action of the pressing part, and thereby the intermediate shaft component of the pricking part is displaced causing the needle shaft component to move in a pricking direction.
