Disclosed are: a nerve block catheter, wherein perivascular nerves can be effectively blocked by comprising a plurality of electrodes, and a tip structure improved to allow the tip not to be large； and a nerve block device comprising the same. A catheter according to one aspect of the present invention is a nerve block catheter comprising: a catheter body long extended in one direction so as to have proximal and distal ends, and having an inner space formed in the longitudinal direction； a moving member capable of moving in the longitudinal direction of the catheter body in the inner space of the catheter body； an operation member of which the distal end is connected to the moving member so as to move the moving member； a plurality of support members of which the ends on one side are connected to the moving member, thereby allowing the other ends to become father from or become closer to the catheter body by the movement of the moving member； a plurality of electrodes, respectively provided at the other ends of the plurality of support members, for generating heat； and lead wires, electrically connected to the plurality of electrodes, respectively, for providing a power supply pathway to the plurality of electrodes, and comprising coil-shaped variable portions in which the proximal ends of the variable portions are fixed to one side of the catheter body and the distal ends of the variable portions are fixed to the moving member.
