The invention discloses a manufacturing method of an enameled wire for a network transformer, and relates to the technical field related to enameled wire production. The method comprises the followingsteps: A, material selection, B, drawing, C, cleaning, D, annealing: adopting a non-contact annealing method to anneal a semi-finished wire twice in an annealing furnace, E, painting: utilizing a painting device to paint the semi-finished wire twice, F, curing, G, detection, H, oiling, and I, wire winding. According to the invention, nitrogen is used as a protective gas, so that the copper wire at high temperature is not contacted with oxygen in the air, the nitrogen is used as the protective gas, the elongation of the product is better compared with steam, copper oxide can be effectively prevented from being generated, the flexibility, thermal shock and thermal aging performance of the enameled wire can be ensured, and the quality of the enameled wire is improved. And through cooperativearrangement of a felt ring, a cotton cloth layer, a fixing ring, a fixing cylinder and a motor, the felt ring and the cotton cloth layer can be driven to rotate, and painting is more uniform.