The present invention relates to a lancet device that can solve the problem of falling or losing a cover when mounting or separating a lancet and reduce the pain that accompanies blood-taking. A 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 an operating mechanism disposed at the other end of the lancet holder and loading and releasing the lancet holder along a predetermined path and an a housing receiving the operating mechanism and having one end coupled to the lancet holder, and further includes a cover that covers the housing so that the lancet holder is received in the housing, is at least partially connected with the housing in order not to separate from the housing in use, and has protrusions on the front part.
