The invention relates to a transposition conductor, in particular to a waterproof polyimide sintered membrane-covered transposition conductor, which belongs to the technical field of coil windings. According to the technical scheme provided by the invention, the waterproof polyimide sintered membrane-covered transposition conductor comprises an oxygen-free copper flat wire conductor, the outer surface of the oxygen-free copper flat wire conductor is polished and then is sequentially coated with an insulation waterproof rubber film layer and a polyimide substrate film layer to form single wires of a transposition conductor core, the single wires of the transposition conductor core are arranged into two rows of single wires with connected narrow edges so as to form a whole bundle of wires via transposition, and a high-temperature-resistant insulation layer which is wound outside the whole bundle of wires is integrally connected with the same. The waterproof polyimide sintered membrane-covered transposition conductor is high-temperature-resistant and high-voltage-resistant, and is fine in corona resistance and waterproofness, strong in applicability and long in service life.