The invention discloses a refillable vertical movable gas cylinder, which comprises an austenitic stainless steel liner, a housing, a support structure, at least one gas tube and an exhaust tube, wherein the support structure is connected with the liner, a vacuum space is formed between the liner and the housing, the tail end of the gas tube is communicated with the liner, and a tube body is arranged in the space. The gas tube of the movable gas cylinder disclosed by the invention penetrates through and is arranged in the space between the liner and the housing, so that the outer surface of the gas cylinder has a simple structure, and the inconvenience caused by the winding of the tube body is avoided in handling and use processes. One end of the support structure is fixed, and the other end of the support structure is not fixed, so that the support performance of a low-temperature insulating gas cylinder can be effectively strengthened. In addition, the liner of the movable gas cylinder disclosed by the invention is made of austenitic stainless steel, so that the movable gas cylinder has sufficient strength, can pass the test of shrinkage deformation of stored liquid after the stored liquid is cooled, and can withstand certain inertial load in a moving process. Therefore, low-temperature gas can be safely and reliably handled.