This study was carried out to investigate flora of Mt. Dosol(Yanggu-gun, Gangwon-do). The vascular plants were summarized as 510 taxa, including 89 families, 281 genera, 438 species, 3 subspecies, 61 varieties and 8 forms. Among the investigated 510 taxa, 21 Korean endemic, 24 rare plants, 1 endangered plant and 122 specially designated plants by the Ministry of Environment were also included. The naturalized plants were 27 taxa. The percent of naturalized plants species and urbanization index were estimated as 5.3% and 8.4%, respectively. Usefulness of plants of 510 taxa listed consists of 201 taxa(39.4%) of edible plants, 186 taxa(36.5%) pasture plants, 144 taxa(28.2%) of medicinal plants, 56 taxa(11.0%) of ornamental plants, 16 taxa(3.1%) of timber plants, 8 taxa(1.6%) of miscellaneous plants and 4 taxa(0.8%) of fiber plants.