The invention provides an automatic wire withdrawing and arranging mechanism for an inverted-H-shaped wheel. The automatic wire withdrawing and arranging mechanism comprises a guide rod, a wire arranging guide wheel, a wire arranging frame, a linking frame and a linking pin arranged on the linking frame, wherein the linking frame is connected with a drive mechanism I which is matched with the inverted-H-shaped wheel in speed; the linking pin is connected with a drive mechanism II; the linking pin can be driven by the drive mechanism I to slide back and forth in a direction parallel to a lengthdirection of the guide rod along with the linking frame; a connecting pin hole is formed in the wire arranging frame; the linking pin can extend out of and can be inserted into the connecting pin hole to realize connection between the drive mechanism I and the wire arranging guide wheel, so that the wire arranging guide wheel obtains moving speed matched with the inverted-H-shaped wheel, and therefore, wire arranging effect is provided for the inverted-H-shaped wheel, and welding wires re-wound on the inverted-H-shaped wheel are orderly arranged to avoid stacking and wire-disordering phenomena, waste of labor and materials is reduced, and production cost is reduced. When the linking pin is withdrawn and separated from the wire arranging guide wheel, the wire arranging guide wheel can perform normal wire arranging work on a welding wire disc, so that the automatic wire withdrawing and arranging mechanism is flexible and convenient, and is high in operability.