PROBLEM TO BE SOLVED: To perform radiography in synchronization with a radiation generator and a radiation detector with a simple configuration.SOLUTION: In a radiography control device, an acquiring part 702a acquires a first signal indicating that an irradiation switch is depressed. An output 702c outputs a signal for transferring a radiation detector 704 to a state in which radiation is detectable according to the first signal. Moreover, the output part 702c wirelessly outputs a specific signal to a control part 1081 of a radiation generator 108. The controller 702b allows the radiation generator 108 to wirelessly output a signal to instruct irradiation of the irradiation ray via the output part 702c functioning as a wireless communication part.