The laser lancing device in accordance with an exemplary embodiment includes: a main body； a laser resonator located within the main body and configured to generate a laser and output the laser forwards； a beam barrel located in front of the laser resonator and including at least one lens unit fixed therein； a window barrel located in front of the beam barrel and connected to the main body； a cap part connected to the front of the window barrel and brought into contact with an irradiation target area； a fan unit communicating with the cap part and induce flow of air； and a communication pipe of which one end is connected to the fan unit and the other end is connected to the cap part.
