According to the application environment of new energy electric vehicle bus bar,the selection of film-forming system resin,main pigments and fillers and additives were studied,and then the formula was optimized;the influence of different epoxy resins,fillers and additives on the coating performance was mainly studied,and finally a new energy electric vehicle with anti-voltage breakdown and anti-bending performance requirements,as well as acid resistance,alkali resistance and flame retardant performance was developed Insulation powder coating for bus bar coating.