Provided is a puncture device with which it is possible to understand to what degree a living body is being heated, and which is capable of suppressing excessive heating and insufficient heating.A puncture device 1 according to a mode of embodiment of the present invention is provided with: a puncture needle 10 which punctures a part of a living body to be punctured, and which supplies thermal energy； a sensor needle 11 including a punctured part temperature sensor 81 which measures the temperature of the punctured part； a holder 12 which holds the puncture needle 10 and the sensor needle 11； a cartridge 60 which accommodates the puncture needle 10, the sensor needle 11 and the holder 12； a main body 30 to which the cartridge 60 can be attached； a contacting portion 20 in which through-holes 28 penetrating through from the obverse side to the reverse side are formed, and which has on an obverse surface side a contacting surface 24b which comes into contact with an obverse surface of the punctured part； and a drive unit 40 which causes the holder 12 to move in such a way that the puncture needle 10 and the sensor needle 11 are extended and retracted from the contacting surface 24b through the through-holes 28.L'invention concerne un dispositif de ponction avec lequel il est possible de comprendre à quel degré un corps vivant est chauffé, et qui est capable de supprimer un chauffage excessif et un chauffage insuffisant. Un dispositif de ponction 1 selon un mode de réalisation de la présente invention comprend : une aiguille de ponction 10 qui perce une partie d'un corps vivant à ponctionner, et qui fournit de l'énergie thermique； une aiguille de capteur 11 comprenant un capteur de température de partie perforée 81 qui mesure la température de la partie perforée； un support 12 qui maintient l'aiguille de ponction 10 et l'aiguille de capteur 11； une cartouche 60 qui reçoit l'aiguille de ponction 10, l'aiguille de capteur 11 et le support 12； un corps principal 30 auqu
