The invention provides a steel component hoop bending machine head and a multi-machine-head both-direction numerical control steel component bending center. The steel component hoop bending machine head comprises an installing base, a core shaft, a torsion head, a gear shaft and a drive mechanism. An installing frame is arranged on the upper surface of the installing base. The gear shaft is provided with a first hollow shaft hole. The drive mechanism is used for driving the gear shaft to rotate on the installing frame. The drive mechanism is further used for driving the core shaft to slide in the first hollow shaft hole. The torsion head comprises a torsion head shaft, a rotation outer shell and a connecting arm. A strip-shaped sliding groove is formed in the rotation shell, the rotation shell is arranged on the gear shaft, and the connecting arm is arranged in the strip-shaped sliding groove. The torsion head shaft is arranged at the outer end portion of the connecting arm. The connecting arm can rotate relative to the core shaft, and the connecting arm can move along with the core shaft. The machining efficiency of steel bar hoop bending equipment is improved, and the labor intensity of workers is reduced.