To provide a machining position displaying device to make display by emitting visible laser beams from a visible laser emitting device and forming an intersection point with the irradiation of the laser beams in two directions through a lend.

Two visible laser beams in X- and Y-directions irradiating a boring machine 1 are elongated longitudinally by passing them through a lens 3 in the form of circular column. The place where elongated visual laser beams intersect is the center onto which a drill 8 falls. because the boring operation is conducted upon setting the punch position on a parent material at the point where the X- and Y-direction laser beams intersect and fixing the parent material, it is possible to eliminate single-hand works involved in a series of procedures according to the conventional technique to lead to securing the safety and also omit repetitive operations of alignment.