This survey was carried out to investigate the flora of Mt. Durueng and Palbong at Hongcheon. Vascular plants surveyed were consisted of 228 taxa, i.e., 164 species, 3 subspecies, 49 varieties, and 12 formae. Korean endemic plants were Eleutherococcus divaricatus var. chiisanensis, Cirsium setidens, Carpinus turczaninovii, Vicia chosenensis, and Asperula lasiantha. Also, the conservatory plants classified from first grade to fifth grade were distributed 39 taxa in the Mt. Durueng and Palbong. Among them, Gastrodia elata Blume and Epimedium koreanum Nakai were investigated as rare plants. The naturalized plants were found four species.