A transportation device, for transporting a screen box body, comprising at least one transportation trolley, the transportation trolley comprising: a base, comprising: a carrying surface, and a plurality of first positioning structures on the carrying surface, each of the first positioning structures being at least one of a first positioning piece and a first positioning hole, wherein each of the first positioning piece defines a first fixing hole, configured to receive a fixing plug; and the plurality of first positioning pieces are spaced; a second fixing hole is provided at a side wall of the first positioning hole, configured to receive the fixing plug, and the plurality of first positioning holes are spaced, and at least one caster arranged on a side of the base facing away from the carrying surface, and at least one fixing seat, comprising: a plurality of second positioning structures arranged at one side of the fixing seat facing the base, each of the second positioning structures being at least one of a second positioning hole and a second positioning piece, wherein each of the second positioning piece defines a third fixing hole configured to receive a fixing plug, and a plurality of the second positioning pieces are spaced; and a plurality of second positioning holes are spaced; a distance between each adjacent first positioning structure is equal to a distance between each adjacent second positioning structure; the screen box body is configured to be fixed between the fixing seat and the base, the transportation trolley further comprises at least one lateral plate, one end of the lateral plate being movably connected to one end of the base; characterized in that a fourth fixing hole is provided at a side wall of the second positioning hole, configured to receive the fixing plug, the lateral plate being provided with at least one fixing latch at an edge of the lateral plate, the fixing latch comprising: a connecting portion connected to the lateral surface, and a latching portion protruded and rotatably connected to the connecting portion. a carrying surface, and a plurality of first positioning structures on the carrying surface, each of the first positioning structures being at least one of a first positioning piece and a first positioning hole, wherein each of the first positioning piece defines a first fixing hole, configured to receive a fixing plug; and the plurality of first positioning pieces are spaced; a second fixing hole is provided at a side wall of the first positioning hole, configured to receive the fixing plug, and the plurality of first positioning holes are spaced, and at least one caster arranged on a side of the base facing away from the carrying surface, and at least one fixing seat, comprising: a plurality of second positioning structures arranged at one side of the fixing seat facing the base, each of the second positioning structures being at least one of a second positioning hole and a second positioning piece, wherein each of the second positioning piece defines a third fixing hole configured to receive a fixing plug, and a plurality of the second positioning pieces are spaced; and a plurality of second positioning holes are spaced; a distance between each adjacent first positioning structure is equal to a distance between each adjacent second positioning structure; the screen box body is configured to be fixed between the fixing seat and the base, the transportation trolley further comprises at least one lateral plate, one end of the lateral plate being movably connected to one end of the base; characterized in that a fourth fixing hole is provided at a side wall of the second positioning hole, configured to receive the fixing plug, the lateral plate being provided with at least one fixing latch at an edge of the lateral plate, the fixing latch comprising: a connecting portion connected to the lateral surface, and a latching portion protruded and rotatably connected to the connecting portion.