The invention relates to an aluminum flat wire wrapped with polyaramide paper, and the aluminum flat wire provided by the invention comprises a soft aluminum flat conductor, a polyaramide insulating paper insulation layer and a sized paper insulation layer, wherein the polyaramide insulating paper insulation layer and the sized paper insulation layer are sequentially coated on the outer surface of the soft aluminum flat conductor, and then coiled and wound through a traction device, thus forming a compound insulation layer. The thickness of the compound insulation layer is 0.19-0.26mm. The polyaramide insulating paper is adopted as the insulating paper insulation layer. The thickness of the polyaramide insulating paper insulation layer is 0.08-0.12mm. The thickness of the sized paper insulation layer is 0.11-0.15mm. The soft aluminum flat conductor forms an aluminum single wire core by virtue of continuous extrusion of an aluminum rod. The aluminum flat wire is compact and reasonable in structure; the electrical properties and mechanical strength performance of a winding wire are greatly improved, the anti-deformation capability and the anti-impact capability are higher, the coil of a winding is small in volume, light in weight, large in current carrying capacity and small in loss, and the using functions and service life of a product can be further improved; and the safe, steady and high-speed driving of a maglev train can be also ensured.