Hydrogen hydraulic compression device comprising a low-pressure hydrogen storage tank , a high-pressure hydraulic pump with its inlet connected via pipeline with a container filled with a fluid , a first cylinder and a second cylinder of a first compression stage, a cylinder of a second compression stage and a buffer cylinder for storing a high-pressure hydrogen; an outlet of said tank is connected via pipeline with inlets of a second valve and a third valve of the first group with their outlets connected with outlets of the first cylinder and the second cylinder of the first compression stage, respectively, wherein said outlets and inlets of the second valve and the third valve are connected with the inlets of the first and the second valves, respectively, the outputs of which are connected to the output hole of the cylinder of the second compression stage and the input of a first valve of a third group, an output of which is connected to the input hole of the buffer cylinder for storing the high-pressure hydrogen; the output of the hydraulic pump is connected to inputs of three valves (16-18) of a fourth group and an input of a safety valve , wherein the outputs of the three valves (16-18) of the fourth group are connected to an input of one of three fluid flow meters (20-22), respectively, wherein the outputs of the first flow meter and the second flow meter are connected to the inlet of the first cylinder and the second cylinder of the first hydrogen compression stage, respectively, and the output of the third flow meter is connected to the inlet of the cylinder of the second hydrogen compression stage, wherein the outputs of each of the three said valves (16-18) of the fourth group and the inputs of the flow meters (20-22) are also connected to an input of one of three valves (23-25) of a fifth group, respectively, the output of which is connected to the container with the fluid through one of the three optical sensors (26-28), respectively, and the output of the safety valve is directly connected to said container ; the outlet of the buffer cylinder is connected by a pipeline to the valve for supplying hydrogen to the consumer, the outputs of the cylinders of the first hydrogen compression stage and the cylinder of the second hydrogen compression stage are connected to one of three pressure sensors (30-32), respectively, characterised in that the low-pressure hydrogen storage tank has two holes, a first inlet hole and a second outlet hole, the first inlet hole is connected to an outlet of a valve for supplying hydrogen from an external source, the inlet of which is connected to an electrolyser connected to electric power sources , and the second outlet hole is connected to an inlet of a first valve of the first group, the outlet of which is connected by pipeline to the inlets of the second valve and the third valve of the first group, the outlets of which are connected to the outlets of the first cylinder and the second cylinder of the first compression stage, wherein the device is equipped with an additional container , the inlet of which is connected by pipelines to the inlet of an additional valve and an outlet of a second valve of the third group, the inlet of which is connected to the outlet of the cylinder of the second stage of hydrogen compression and the outlets of the valves of the second group connected to it, the inlet of the first valve of the third group and to the third pressure sensor , the output of the additional valve is connected to the output of the first valve of the first group, which is connected to the inputs of the second valve and the third valve of the first group. <EOS>