Abstract: The present invention relates to a composition for promoting myogenesis, containing, as an active ingredient, a processed ginseng extract in which a trace amount of a ginsenoside ingredient is increased. It has been ascertained that the processed ginseng extract promotes the differentiation of myoblasts into muscle and inhibits muscle atrophy caused by myostatin, which is a myogenesis inhibitory factor, and thus it is expected that a composition for preventing or treating muscle disorder-related diseases, having excellent effects, can be developed.