The invention relates to a high-thermal resistance corona enabled flat winding and a fabrication method thereof, and belongs to the technical field of a corona-resistant enabled flat winding. The high-thermal resistance corona enabled flat winding comprises a core wire and also comprises a paint film, wherein the paint film wraps the core wire and particularly comprises a bottom paint layer, a corona-resistance paint layer and a surface paint layer, the bottom paint layer is arranged at an outer layer of the core wire, the corona-resistance layer is arranged at an outer layer of the bottom paint layer, and the surface paint layer is arranged at an outer layer of the corona-resistance layer. Multiple insulation layers having different properties are formed on an outer surface of the core wire by repeated paint coating and baking, so that the corona-resistant enabled wire with a composite insulation layer is formed, the corona-resistant enabled wire has good adhesiveness and corona-resistant performance, and the requirement of corona resistance and temperature resistance of an electric vehicle driving motor can be met.