Abstract: The present invention relates to a high-power thermoelectric conversion module and thermoelectric conversion system. The thermoelectric conversion module includes: a first substrate made of ceramic; a second substrate made of ceramic and disposed opposite to the first substrate; a plurality of third electrodes and thermoelectric conversion elements arranged crosswise in a matrix between the first substrate and the second substrate; a first electrode disposed between the first substrate and the thermoelectric conversion elements; and a second electrode disposed between the second substrate and the thermoelectric conversion elements. The first electrode is connected to one ends of the thermoelectric conversion elements and the third electrodes whose tops are flush with the one ends of the thermoelectric conversion elements, respectively.