An OLED driving system and an OLED driving method according to the present invention include: storing usage information representing an accumulated actual usage time of an OLED lighting device with respect to each of a plurality of electric current ranges different from one another in a usage information storage part; updating the accumulated actual usage time by adding an actual usage time of the OLED lighting device to the accumulated actual usage time stored in the usage information storage part and represented as the usage information with respect to a specific electric current range corresponding to an electric current value of an electric power output to the OLED lighting device; and storing the updated accumulated actual usage time.