The utility model belongs to the technical field of tunnel engineering, specifically a highway tunnel height hole isolating construction. The problem of how to avoid crossing construction realize withthe linking of grade separation is solved, including high hole and low hole, high hole and low hole set up in same tunnel, and the horizontal plane in high hole is higher than the horizontal plane inlow hole, and low hole both sides are equipped with concrete retaining wall, are equipped with the stull between the concrete retaining wall, in the low hole and the concrete retaining wall top surface of high adjacent one side in hole highly be higher than high hole horizontal plane height, the concrete retaining wall inboard is equipped with shotcrete, concrete retaining wall passes through theanchor rope anchor. The utility model has the advantages of modern design, simple structure, construction are convenient, still reduce safe risk, improved the project progress, strengthened work efficiency.