The present invention relates to a method for preparing a preparation for percutaneous absorption, which comprises rotigotine as an active ingredient, and more specifically, to a method for preparing a preparation for percutaneous absorption comprising a step of mixing rotigotine and an ethylene-vinyl acetate adhesive so as to have a weight ratio of 1:0.1 to 20, a preparation for percutaneous absorption manufactured by the method, and a percutaneous treatment system. The preparation and the system, according to the present invention, prevent separation of the rotigotine, thereby increasing long-term storage stability, and effectively release the rotigotine, and thus can be effectively applied to preparing patch medication containing the rotigotine.