Lancet assembly and lancet storage device

A lancet assembly is disclosed. The lancet assembly according to the present invention is used in a lancing device, which comprises a launching device for advancing a lancet to be withdrawn to the outside and a lever for stopping and allowing the advance of the lancet or launching device, and comprises: a lancet; a lancet body which exposes the front of the lancet and is coupled to the back of the lancet; and a protective cap which envelops the front of the lancet exposed from the lancet body and is closely coupled to the lancet body, wherein the rear end of the lancet body is coupled to the launching device. According to the present invention, the lancet body and the protective cap are easily separated and coupled, thereby allowing easy loading into the launching device. In addition, the lancet body is easily and securely coupled to and separated from the launching device by means of an insertion protrusion and a joint, and the lancet body and the protective cap are easily recoupled by means of a central groove or protrusion formed in the protective cap.