The utility model discloses a bicolor heat-insulation hanger rail door which relates to the field of building, in particular to a hanger rail door. At a doorway of a building, a door frame is formed by a bicolor heat-insulation hanger rail door upper rail, a bicolor heat-insulation hanger rail door lower rail and a bicolor heat-insulation hanger rail door side seal, a bicolor heat-insulation hanger rail door inner leaf and a hanger rail door buckling cover form inner and outer door leaves, and the inner and outer door leaves are arranged in the door frame. The bicolor heat-insulation hanger rail door upper rail, the bicolor heat-insulation hanger rail door lower rail, the bicolor heat-insulation hanger rail door side seal and the bicolor heat-insulation hanger rail door inner leaf are respectively formed by an inner aluminium profile of a hanger rail door, an outer aluminium profile of the hanger rail door, and two heat insulation strips; the butt-joint surfaces of the inner aluminium profile of the hanger rail door and the outer aluminium profile of the hanger rail door are respectively provided with two grooves, the heat insulation strips are positioned between the inner aluminium profile of the hanger rail door and the outer aluminium profile of the hanger rail door, and two ends of the two heat insulation strips are respectively embedded into the grooves on the inner aluminium profile of the hanger rail door and the outer aluminium profile of the hanger rail door. The bicolor heat-insulation hanger rail door solves the problems that the existing hanger rail door profiles do not have the heat-insulation property, and the inside and the outside of the hanger rail door profiles have a same color.