The present invention provides a method for preparing a transparent hydrogel membrane, the method including: (a) preparing 6 to 10 wt % of a hyaluronic acid solution based on a total weight of a mixture by dissolving a hyaluronic acid in a basic aqueous solution; (b) mixing, with the hyaluronic acid solution, 0.01 to 0.05 wt % of a crosslinking agent based on the total weight of the mixture; and (c) shaping the transparent hydrogel membrane by pouring the mixture into a mold.