The present invention relates to a composition for promoting periodontal regeneration. The composition for promoting periodontal regeneration according to the present invention includes any one dicotyledon extract belonging to the order Campanula punctata, selected from the group consisting of Ussuri thistle extract, Helianthus annuus extract, Dandelion extract, Chrysanthemum extract, Arctium lappa extract, Common cosmos extract, Ligularia stenocephala extract, Foremost mugwort extract, Cichorium intybus extract, and mixture thereof.