The invention provides a halogen free flame retardant electronic wire that has excellent characteristics of flexibility and voltage resistance by optimizing resin match in an electrical insulator formed by an inner and an outer layer. The halogen free flame retardant electronic wire insulates in periphery of a conductor (2) by an electrical insulator (5) formed by an inner and an outer layer (3, 4). The inner layer (3) is formed by adding improved ethylene/ethyl acrylate polymer by maleic anhydride of 5 weight parts to 40 weight parts and metal hydroxids (improving rate of the maleic anhydride is 1% to 40%) in 100 weight parts of ethylene/ethyl acrylate polymer with content of vinyl acetate is more than or equal to 60% but less than or equal to 80%. The outer layer (4) is formed by addingmetal hydroxids in the ethylene/ethyl acrylate polymer with content of vinyl acetate is more than or equal to 30% but less than or equal to 60%. In addition, thickness of the formed outer layer (4) is greater than that of the inner layer (3).