▎ 摘　　要

NOVELTY - The utility model claims a device for preparing graphene film, comprising a magnetic control board, DC magnetic ring high-frequency frame, frequency control device, spectrum, ion layer, an oxide film layer, two ends of the high frequency frame is provided with a direct current magnetic ring; two sides of said frequency control device is connected with a magnetic control board, the high frequency frame frequency control device is set in the frequency control device comprises gas pipe body, a level electrode and oxidation tube body, inner deckle board, oxyalkylene release body, two electrodes, one end of the air pipe body connected with a outside electrode; the one electrode is connected with oxidation tube body one side of the oxidation tube body is provided with oxyalkylene release body, the ion layer is connected with the oxidation film, said one electrode is connected with inner frame plate, said second electrode is connected with inner frame plate, connecting the spectral layer with ion, the spectral layer connected with the oxide film layer. The beneficial effect of the utility model is realized by the frequency control device connected on two sides of the magnetic control board, make it more stable in operation, speed control.