The invention relates to the field of super-high-voltage and ultra-high-voltage electrical manufacturing, in particular to an epoxy-resin-impregnated yarn winding process for a dry type air reactor. The process includes the following steps that firstly, dry glass fiber yarn is placed in a container, epoxy resin and packing are injected into the container, after the epoxy resin and the packing are fully and evenly mixed with the glass fiber yarn, a heating lamp is turned on to heat the glass fiber yarn, the glass fiber yarn is fully impregnated with the epoxy resin and the packing, and finally the epoxy-resin impregnated glass fiber yarn is manufactured; secondly, a layer of epoxy-resin-impregnated glass fiber yarn is wound around the circumferential face formed by a mold core and an iron rod, a winding wire is wound, and then a layer of epoxy-resin-impregnated glass fiber yarn is wound. Epoxy-resin-impregnated glass fibers are adopted for wrapping a large reactor coil, sealing performance is better than that of an original manufacturing method that a wire is exposed, water and impurities can be prevented from entering the reactor, and the probability in which accidents of wire turn-to-turn short circuits happen can be greatly decreased.