The utility model discloses a roller compacted concrete interlayer structure suitable for arch slope highway belongs to the road and builds technical field for solving exchanging that present arch slope course exists and subsiding, and the problem of sliding to both sides and low level, this interlayer structure is including from bottom to top bed course, basic unit and surface course, and the interlayer structure both sides set up the curb, the surface course includes from bottom to top just a rolling molding's roller compacted concrete of lower floor and upper roller compacted concrete, lower floor's roller compacted concrete upper surface is equipped with a plurality of evenly distributed's recess, the surface course forms the cusp bayonet socket with the both sides that the curb is connected. The utility model discloses a surface course adopt rolling molding of roller compacted concrete, have higher intensity and stability, the setting of recess and cusp bayonet socket simultaneously can improve roller compacted concrete interlayer structure's skid resistance.