[Object] A wearing determination apparatus that accurately determines whether an electronic device is worn to achieve power saving is provided.[Solution] A wakeup process of a living body tactile sensor 13 and a wearing determination unit 21 is performed when an accelerometer 11 detects an acceleration. Accordingly, the living body tactile sensor 13 and the wearing determination unit 21 are in a sleep mode while the accelerometer 11 detects no acceleration. When the wearing determination unit 21 determines a non-wearing state, the wearing determination unit 21 performs a sleep process to switch itself from a wakeup mode to the sleep mode.