The invention relates to a forming processing method for a rotating double lug and belongs to the technical field of manufacturing of a part of an electrical railway contact system. The method disclosed by the invention is a material-saving energy-saving low-cost precision pressure forming technology; any defects of no shrinkage cavity or shrinkage porosity, thick tissues and the like of the rotating double lug are finally overcome; the mechanical performance of the part is improved; and the unsafety hidden danger of the part in the operating process of an electrical railway is eliminated. According to the forming processing method for the rotating double lug, which is disclosed by the invention, an aluminium alloy material with the trade mark of 6082 is selected, so that the part is avoided having the defects of shrinkage cavities, pores, thick tissues and the like; and after the part is subjected to thermal treatment, the main mechanical performances of the part can achieve the effects that the tensile strength is more than or equal to 320MPa, the regular non-proportional tensile strength is more than or equal to 300MPa and the elongation after fracture is more than or equal to 13 percent; and the mechanical strength and the plasticity of the rotating double lug are greatly improved, so that the service life of the part is prolonged and the development requirement of the high-speed electrical railway is met.