Provided is a thermoelectric conversion module which is folded in a bellows-like shape and is capable of preventing a thermoelectric conversion layer from coming into contact with other member even in a state in which bellows is closed and performing highly effective power generation. This thermoelectric conversion module includes a bellows-like substrate, P-type and N-type thermoelectric conversion layers which are alternately provided on each sloped surface of the substrate on one surface of the substrate, a top portion electrode which connects the P-type and N-type thermoelectric conversion layers over a top portion and a bottom portion electrode which connects P-type and N-type thermoelectric conversion layers over a bottom portion, in which the P-type and N-type thermoelectric conversion layers do not extend over the top portion and the bottom portion, and positions of the P-type thermoelectric conversion layer and the N-type thermoelectric conversion layer which face each other are not overlapped as viewed in the arrangement direction.