Plant in chollabuk-do have investded 105 family, 442 species. 2. The order of distribution of the most family was the Compositae 43, Leguminosae Gramineae each 28, Rosaceae 17, Liliaceas 22, Labiatae 17, Ranunculaceae 12, Betulaceae 11, Violaceae 10, Polygonaceae Aspidiaceae each 9, Cruciferae${cdot}$Caryothyllaceae${cdot}$Celastraceae each 8, Fagaceae, Rubiaceae each 6, Ulmaceae 5. 3. Medical plants have invested 56 family, 116 species. 4. The order of the most family was the Compositae 8, Liliaceae Rosaceae${cdot}$Umbelliferae${cdot}$Labiatae each 6, Leguminosae${cdot}$Rutaceae each 5, Campanulaceae${cdot}$Ranunculaceae each 3, Simaroubaceae${cdot}$Euphorbiaceae${cdot}$Araliaceae each 2, Scrophulariaceae${cdot}$Plantaginaceae each 1.