To prevent photographing in a mode not conforming to each photographing technique due to mounting error or the like by a user.

A radiographic device 1 includes a radiation detecting device 11 constituted by a large number of solid detection elements which are two-dimensionally arranged, a radiation adjusting member attachment/detachment mechanism 13 for making a radiation adjusting member 3 for adjusting energy distribution and intensity of incident radiation attachable/detachable to a rear face with respect to a radiation incident surface of the radiation detecting device 11, a radiation adjusting member kind detection mechanism 15 that detects a kind of the radiation adjusting member 3, a radiographic device attachment/detachment mechanism 14 for making a second radiographic device 2 having a second radiation detection device 21 different from the radiation detecting device 11 attachable/detachable, and a radiographic device attachment/detachment mode detection mechanism 16 that detects an attachment/detachment mode of the second radiographic device 2.