The invention provides a non-halogen multilayer insulated wire, which has excellent attrition resistance, hydrolysis resistance, fire resistance, heat resistance, low smokiness, hypotoxicity and insulation resistance in high temperature, and especially meets European standards. The non-halogen multilayer insulated wire includes a conductor, an inner layer covering the conductor, and an outer layer on the inner layer. The inner layer includes a polyolefin resin composition including a high density polyethylene and a copolymer in a mass ratio on the range of 50:50 to 90:10, and the copolymer includes one of an ethylene-ethyl acrylate copolymer including 9% to 35% by mass of ethyl acrylate and an ethylene-vinyl acetate copolymer including 15% to 45% by mass of vinyl acetate. The outer layer is made of a polyester resin composition that includes a base polymer mainly including a polyester resin and further includes, relative to 100 parts by mass of the base polymer, 50 to 150 parts by mass of a polyester block copolymer, 0.5 to 5 parts by mass of a hydrolysis inhibitor,0.5 to 5 parts by mass of an inorganic porous filler, and 10 to 30 by mass of magnesium hydrate.