A radiographing system for radiographing an object, has a radiation generator to irradiate radiation to an object, and a radiographic image detector to detect a radiographic image of the object. Each of the radiation generator and the radiographic image detector comprises a respective radio section to transmit and receive information as radio signals, and when radiographing the object, the radiation generator transmits irradiating information by a radio signal to the radiographic image detector, and then the radiographic image detector reads a radiographic image on a basis of the received the irradiating information.