Based on replacing pure copper materials with copper-clad aluminum composite materials to achieve the core goal of weight reduction, this paper completed the research on the application environment technical requirements of electrical equipment, the design and development of new copper-aluminum alloy composite materials, and the research and development of supporting processing technology for a series of composite products; The interface consistency and stability control of cop-Al continuous casting composite under alloying conditions are preliminatively realized, and the key technologies such as the shape coordination control technology during the forming process of difficult-to-process billet and heat treatment, the small-size composite material coordination deformation control technology under large deformation condition, and the new cop-Al alloy composite wire stranding consistency control are completed. The casting billets of four new types of copper-aluminum alloy composite materials and the development of multi-specifications copper-aluminum alloy composite materials were completed.