Abstract: To investigate effect of emulsion failure on the adhesion of enameled wire coatings and to improve quality stability of enameled wires, influence of drawing emulsion performance on the properties of enameled wire was analyzed by comparing parameters such as emulsion failure status, copper powder color, and surface finish of bare copper wire, combined with the examined key test data including peel torsion test and sudden elongation test. Results indicated that by adjusting the amount of additives to optimize the formulation of drawing emulsion, formation of black copper powder could be mitigated, and coating adhesion could be improved, which could provide a theoretical basis for the maintenance of drawing emulsions in enameled wire production and could be applied to optimize manufacturing processes.