Disclosed is a stretchable and flexible thermoelectric module including: a thermoelectric material; a pair of elastic composites having stretchability and flexibility; and a first electrode and a second electrode, which are deformable and electrically connected to both sides of the thermoelectric material, respectively, and whose one surfaces face each other. Thus, since the thermoelectric module has excellent stretchability, flexibility and thermal conductivity, the thermoelectric module is suitably applied to a wearable device that exhibits excellent efficiency during cooling or heating and is in contact with a human body.