The invention discloses a method for preparing an independent metal nanoribbon, relating to the technical field of nanometer materials. The method comprises the following steps: crystallizing on a monocrystalline silicon wafer or a single crystal alumina wafer or other crystalline matrixes to generate a strip-shaped template by utilizing oxalic acid and other template solutions; plating metals onto the strip-shaped template by adopting a vacuum coating process; dissolving and removing the strip-shaped template by using a solvent, thereby obtaining the independent metal nanoribbon. The method disclosed by the invention is simple in process and is suitable for preparing multiple metal nanoribbons; and moreover, the prepared metal nanoribbon is controllable in thickness, the needed equipment is low in price, and the cost is low.