The invention discloses a highway pavement base course elevation space control baseline frame device and a using method thereof. The highway pavement base course elevation space control baseline frame device comprises a base, a vertical rod, a horizontal rod and a butterfly clamp; the vertical rod is vertically fixed to the base; the horizontal rod is horizontally arranged and movably connected to the upper portion of the vertical rod through the butterfly clamp; the butterfly clamp is a spring plate provided with wings on the four sides correspondingly; vertical limiting holes are formed in the two side wings in the vertical direction, and the vertical rod is arranged in the vertical limiting holes in a penetrating mode; and horizontal limiting holes are formed in the two side wings in the horizontal direction, and the horizontal rod is arranged in the horizontal limiting holes in a penetrating mode. The highway pavement base course elevation space control baseline frame device is easy to manufacture and low in manufacturing cost, construction site mounting and dismounting are quite convenient, and the highway pavement base course elevation space control baseline frame device can be permanently reused, meet the requirements of mechanized construction and standardized construction, and is suitable for large-scale continuous paving operation.