A portable radiographic imaging apparatus includes a switching unit that switches power to the apparatus on and off or switches a power consumption mode of the apparatus between imageable mode and power saving mode； an event information managing unit that collects event information about the apparatus or imaging, or accepts input event information； and a storage unit that saves the collected or input event information. The apparatus includes a battery configured to supply power. The switching unit determines whether to perform imaging, based on past event information saved in the storage unit and event information collected or input at present time, and switches the power from on to off or switches the power consumption mode from the imageable mode to the power saving mode, when the switching unit determines that imaging is not performed.
