The invention relates to a production technology of an enamelled wire, in particular to a production technology of a compound enamelled round aluminium wire with high heat resistance. Compared with the prior art, aluminum conductor surface is sprayed with 142 solvent before being painted with primer and finish paint except being washed with water to rewash residual aluminum powder, carbon depositor oil stain on the aluminum conductor surface, thus ensuring the cleanliness of the aluminum conductor surface; after annealing, the aluminum conductor is directly discharged into air by a big idlerpulley for naturally cooling without being cooled by cooling water and dried by a drying air duct, which prevents the tiny porcelain eye of the drying air duct from scraping the aluminum conductor surface, ensures the fineness of the aluminum conductor surface, improves paint film adhesiveness after coating, improves thermal shock, cut-through resistance and wire diameter uniformity and greatly lowers wire disconnection ratio in the production process; in addition, the invention lowers painting times, increases yield of unit time, effectively improves production efficiency and lowers production cost.