Plants have a unique ecological status, and ecological status cannot be explained only by physical environmental factors. It needs to be explained including spatial concepts. It is important to survey a variety of habitats and to consider qualitative aspects of habitats in the evaluation. We surveyed plants in Haman-gun, Uiryeong-gun, and Jilnal Swamp areas for a total of 21 times (22 days). As a result, 139 families, 447 genera, 826 species, 13 subspecies, 53 varieties, 2 varieties, and 894 taxa were identified. In the Haman area, 127 families, 385 genera, 642 species, 11 subspecies, 45 varieties, 1 variety, and 699 taxa were surveyed, and in the Uiryeong area, 130 families, 384 genera, 657 species, 10 subspecies, 43 varieties, 2 varieties, and 712 taxa were surveyed. In the Jilnalneup area, a tributary wetland of the Namgang River, 102 families, 289 genera, 455 species, 9 subspecies, 24 varieties, 1 variety, and 489 taxa were surveyed. Among the Endangered wildlife species designated by the Ministry of Environment, Aconitum austrokoreense Koidz. and Euryale ferox Salisb. were investigated, and 19 taxa were investigated as endemic species. Floristic target species (FT species), 4 taxa of Grade V and 12 taxa of Grade IV were investigated. Most of the major plants, including endangered wild plants, occupied small distribution areas and had small populations. The most important plant in the wetlands of the study area was evaluated as the Euryale ferox Salisb, which was evaluated as being due to the recent destruction of the seed source. A total of 98 taxa of naturalized plants were investigated, and the naturalization rate was 10.96 and the urbanization index was 15.88. Nine taxa of invasive alien species, were investigated, including Korean Humulus japonicus Siebold & Zucc., Ambrosia artemisiifolia L., Ambrosia trifida L., Aster pilosus Willd., Sicyos angulatus L., Solanum carolinense L., Lactuca scariola L., Solidago altissima L., and Paspalum distichum L. Ambrosia trifida was evaluated as having spread relatively recently, and Sicyos angulatus was forming a colony around the Namgang River. In the survey area, the edge space where plant diversity was evaluated to be high tended to shrink due to the spread of Humulus japonicus, Pueraria lobata (Willd.) Ohwi and naturalized plants. Therefore, a decrease in plant diversity regionally was expected in the future.