To provide a cumulative operating time management device allowing management in each component or target apparatus needing cumulative operating time management without incorporating a dedicated circuit performing the management of a cumulative operating time in an electronic apparatus, in the cumulative operating time management for the electronic apparatus.

This cumulative operating time management device has a structure wherein a thermoelectric conversion element and a cumulative operating time management IC are united, has a self-power-generation function of converting thermal energy generated in time of operation of the electronic apparatus into electric energy, supplying the electric energy to the cumulative operating time management IC and operating it, and can be easily installed to the component or the electronic apparatus that is an operating time management target.