A mobile radiation generating apparatus comprising: a cart unit； a column extending from the cart unit； and an arm extending from the column； a radiation emitting unit arranged in a distal end portion of the arm, and configured to irradiate an object with radiation； a first display control unit configured to cause a first display apparatus arranged in the cart unit to display a radiation image captured by a radiation imaging apparatus which detects radiation transmitted through the object； and a second display control unit independent of the first display control unit, and configured to cause a second display apparatus arranged in the radiation emitting unit or on the arm to display a thumbnail image of the radiation image and a state of the radiation imaging apparatus.
