NOVELTY - The thermoelectric power generation portable apparatus (10) has a thermoelectric power generation element (20) which is provided for generating power on the basis of the temperature difference between a temperature at a heat source-side position and a temperature at a heat release destination-side position. A movable element (22) is provided for changing the thermal resistance of portion of the heat transfer path between the living body and the heat release destination.    USE - Thermoelectric power generation portable apparatus such as thermoelectric power generation wrist watch. Can also be used in thermoelectric power generation headphone, spectacle for stereoscopic vision and thermoelectric power generation measurement device for measuring biometric information such as pulse and heartbeat rate, respiration rate, blood pressure and body temperature of human and animal.    ADVANTAGE - The movable element is provided for changing the thermal resistance of portion of the heat transfer path between the living body and the heat release destination, thus the electric power generation efficiency can be improved. The thermal resistance of the portion of the heat-transfer path can be easily changed by equipping the surroundings of the rotating shaft with the plate-shaped element which is moved to predetermined direction, thus the complication of the equipment configuration can be suppressed. The change of the position of the interference with respect to the presence or absence of interference can be produced easily, and the thermal resistance of portion of heat-transfer path can be changed easily, thus the rotation property of the movable element can be improved.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electric power generation control method of thermoelectric power generation portable apparatus.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the thermoelectric power generation portable apparatus. (Drawing includes non-English language text)    Thermoelectric power generation portable apparatus (10)    Substrate (19)    Thermoelectric power generation element (20)    Movable element (22)    Heat conductive grease (23)