To provide a radiographic imaging system capable of accurately preventing an artifact from being caused in image data obtained by re-imaging even when a wrong exposure occurs to a radiographic imaging device when the radiographic imaging device detects the start of irradiation with radiation by itself.

A radiographic imaging system 50 includes a radiographic imaging device 1, a radiation generation device 55 including a radiation source 52, and notification devices 58, 70 with notification means 58a, 71. Control means of the radiographic imaging device 1 performs detection processing for wrong exposure from the radiation source 52 based upon data changing as a radiation is emitted in a mode in which the start of irradiation with a radiation is not detected, transmits a signal indicating that the wrong exposure is performed onto the notification devices 58, 70 when the wrong exposure is detected. On receiving the signal, the notification devices 58, 70 report a wait time up to a time when re-irradiation with a radiation from at least the radiation source 52 is allowed by the notification means 58a, 71.