A lancing device includes: a cover section, a part of which is provided with an opening a main body held on the cover section and configured to be movable in a predetermined direction from the opening relative to the cover section a lancing unit which is launched in the predetermined direction and an operating section configured to launch the lancing unit when the operating section is pushed by applying a force in the predetermined direction, wherein the lancing unit is launched when the force is applied to the operating section in the predetermined direction with regulating a movement of the main body in the predetermined direction, and the main body moves, instead of pushing the operating section, by applying the force in the predetermined direction without regulating the movement of the main body in the predetermined direction is disclosed.
