A thermoelectric module according to one embodiment of the present invention comprises: a first metal substrate; a thermoelectric element; and a second metal substrate, wherein the thermoelectric element comprises a first resin layer, a plurality of first electrodes, a plurality of P-type thermoelectric legs and a plurality of N-type thermoelectric legs, a plurality of second electrodes and a second resin layer, wherein the width of the first metal substrate is greater than the width of the second metal substrate, and the first metal substrate comprises a first surface in direct contact with the first resin layer and a second surface opposite to the first surface, and further comprises: a first support spaced apart from the thermoelectric element and a side surface of the second metal substrate on the first surface of the first metal substrate, and arranged so as to surround the thermoelectric element and the side surface of the second metal substrate; and a sealing material spaced apart from the thermoelectric element and the side surface of the second metal substrate, on the first surface of the first metal substrate, and arranged so as to surround the thermoelectric element and the side surface of the second metal substrate.