A control device (20, 30) for controlling an aircraft steering apparatus (1, 1') operating traveling of an aircraft when the aircraft travels on the ground, the aircraft steering apparatus (1, 1') comprising: an operation unit having rudder pedals, a main pilot steering handle, and a co-pilot steering handle which are providable in a cockpit of an aircraft; and an actuator driven in accordance with an operation amount output from the operation unit for driving and steering at least a steered wheel of the aircraft; and a preference instruction switch (11, 12) provided near each of the main pilot steering handle and the co-pilot steering handle for giving an instruction to preferentially select the operation amount corresponding to operation of the steering handle (2, 3) assigned thereto over the operation amounts corresponding to operation of other parts of the operation unit for driving the actuator, characterized in that the control device (20, 30) includes: a switching control unit (22, 31) exclusively switching, based on instruction input from at least one of a main pilot and a co-pilot, which of operation amounts corresponding to operation of the rudder pedals, the main pilot steering handle, and the co-pilot steering handle is used for driving the actuator; and a switching instruction unit determining whether the actuator is currently driven in accordance with the operation amount corresponding to operation of the rudder pedals or not, and when, as a result of the determination, the actuator is being driven in accordance with the operation amount corresponding to operation of the rudder pedals, if the preference instruction switch assigned to the main pilot steering handle is in an ON state, the switching instruction unit instructs the switching control unit (22, 31) to switch to driving the actuator in accordance with the operation amount corresponding to operation of the main pilot steering handle, and if the preference instruction switch assigned to the main pilot steering handle is in an OFF state and the preference instruction switch assigned to the co-pilot steering handle is in an ON state, the switching instruction unit instructs the switching control unit (22, 32) to switch to driving the actuator in accordance with the operation amount corresponding to operation of the co-pilot steering handle. a switching control unit (22, 31) exclusively switching, based on instruction input from at least one of a main pilot and a co-pilot, which of operation amounts corresponding to operation of the rudder pedals, the main pilot steering handle, and the co-pilot steering handle is used for driving the actuator; and a switching instruction unit determining whether the actuator is currently driven in accordance with the operation amount corresponding to operation of the rudder pedals or not, and when, as a result of the determination, the actuator is being driven in accordance with the operation amount corresponding to operation of the rudder pedals, if the preference instruction switch assigned to the main pilot steering handle is in an ON state, the switching instruction unit instructs the switching control unit (22, 31) to switch to driving the actuator in accordance with the operation amount corresponding to operation of the main pilot steering handle, and if the preference instruction switch assigned to the main pilot steering handle is in an OFF state and the preference instruction switch assigned to the co-pilot steering handle is in an ON state, the switching instruction unit instructs the switching control unit (22, 32) to switch to driving the actuator in accordance with the operation amount corresponding to operation of the co-pilot steering handle.