The invention discloses a method for manufacturing an anti-disengaging pre-forking copper core cable, and belongs to the field of cables, wherein the anti-disengaging pre-forking copper core cable is one of pre-forking cable terminals. According to the method, a conductor cable core of a main cable and a conductor cable core of a branch cable are formed in a pressing fit mode, after an insulation belt is wound and injection molding is conducted, the pre-forking copper core cable is obtained, then a net-shaped hanger is installed and a finished product is obtained. By the adoption of the method, the anti-disengaging pre-forking copper core cable has the advantages of being simple in end processing structure, safe, reliable, convenient to assemble and disassemble, firm in hoisting, good in sealing performance, resistant to high temperature and corrosion, and capable of preventing fire and explosion; insulation resistance cannot be lowered by moisture, and the anti-disengaging pre-forking copper core cable can be widely used in various industrial buildings and civil buildings.