The invention belongs to the technical field of devices combining antenna components with antennas, and discloses a novel double-layer scissor parabolic cylindrical expandable truss antenna device, which is composed of a plurality of double-layer scissor hinge mechanisms, wherein adjacent double-layer scissor hinge mechanisms are connected to each other by a double-headed hinge, a sliding hinge, athree-headed hinge and a four-headed hinge to form a closed parabolic cylinder; each double-layer scissor hinge mechanism consists of two vertical rods, two long inclined rods, two short inclined rods, four double-headed hinges, four sliding hinges, and two springs; and adjacent two double-layer scissor hinges share a vertical rod, a double-headed hinge or a three-headed hinge or a four-headed hinge, a sliding hinge, and a spring. The invention has high geometric stability, strong rigidity, simple movement mechanism and control system, small volume after closing, high storage rate, strong module expansion, as well as simple assembly, and may be respectively deployed in the axial or length direction, thereby satisfying the requirements for the use of aperture antennas.