A radiation imaging system that can continuously use sections of a radiation imaging device that has not been damaged and a radiation imaging device are provided. The radiation imaging system comprises: a radiation device that applies radiation and the radiation imaging device with an imaging panel that captures images of the applied radiation. The radiation imaging device comprises: a failure cause detection unit that detects environmental noise or falls that cause failures in the radiation imaging device a malfunction diagnostic unit that, in a case where a detected environmental noise value reaches a threshold value or in a case where a fall has been detected, diagnoses a malfunction in the radiation imaging device and a function limiting unit that applies limits to the radiation imaging device functions that are used continuously, in accordance with the diagnosis results of the malfunction diagnostic unit.
