Disclosed in the present invention is a CT machine wireless controller, a system and a CT machine. The wireless main controller comprises : a CT main control board and a wireless main control board； wherein the wireless main control board is used for receiving a control signal from a wireless secondary controller, subjecting the control signal to a validity check according to an identifier of the wireless secondary controller carried in the control signal, and supplying the control signal which has passed the check to the CT main control board； the CT main control board is used for receiving a control signal from the wireless main control board, and performing corresponding operation control according to the control signal. The technical solution in embodiments of the present invention can facilitate rational arrangement of control components.
