A lancet-separable lancet device according to an exemplary embodiment of the present invention includes: a lancet holder having a lancet seat to mount a lancet at one end and a separation hole at the other end an operating mechanism disposed at the other end of the lancet holder so that the lancet holder is loaded and released by traveling along a predetermined path a housing receiving the operating mechanism and having one end coupled to the lancet holder an operation switch connected to the operating mechanism and operating the operating mechanism by pressing it a cover covering one end of the housing and having a through-hole at the center through which a lancet needle of the lancet instantaneously protrudes and a lancet separation mechanism disposed at the other side of the lancet holder and separating the lancet from the lancet holder by being inserted into the separation hole of the lancet holder.
