To provide a thermoelectric device which reduces a contact electric resistance between thermoelectric materials, raises a thermal density, and has a small, durable structure, and further to provide a method for manufacturing the thermoelectric device which is reduced in production cost, is mass-produced, and provides a high flexibility in selection of the size of the thermoelectric device.

This thermoelectric device has: a plurality of p-type thermoelectric materials; and a plurality of n-type thermoelectric materials which are disposed via first insulating materials 12 alternately with respect to each of the plurality of p-type thermoelectric materials, and has a joint area 14 jointed electrically to the adjacent p-type thermoelectric material. The plurality of p-type thermoelectric materials and plurality of n-type thermoelectric materials jointed mutually are used as a thermoelectric material array, and such a plurality of thermoelectric material arrays are disposed in a second direction perpendicular to a first direction which is a direction in which the p-type thermoelectric materials and the n-type thermoelectric materials are jointed, and are mutually jointed. Second insulating materials 13 are disposed between the plurality of thermoelectric material arrays so that the p-type thermoelectric materials and the n-type thermoelectric materials of the plurality of thermoelectric material arrays are electrically connected in series.