Manufacturing method of spiral bracket and spiral bracket

The invention aims at providing a manufacturing method of a spiral bracket and the spiral bracket. The spiral bracket can prevent central deviation of a cover layer, and the correct position of a crosshead mould corresponding to the phase of a long screw can be set in a short time. The manufacturing method of the spiral bracket in the invention is as follows: a mould (8) in two section holes are fed by metal core wires (2), wherein the front part of the mould is a small hole (82) in long spiral forms through which metal wires can penetrate, the rear part is a big hole (83) with the inner diameter being greater than that of the above small hole (82). While the wire cores (2) are bent by the front part of the mould (8) into long spiral forms, the rear part of the mould (8) is coated by high polymer materials.