We carried out the analytical study on the teaching plants appearing in all the textbooks of the primary school of Korea, 1990. The results were summarized as follow: 1. Teaching plants of 222 species appeared in the textbooks of the primary school. The high level number of species were appeared in Korean language, Paractice, Society, Morality subject, and in sixth, fourth and fifth classes in turn. 2. The errors of plant name were discovered in the 26 species. 3. The classification system for plants in the primary school curriculum was based on the Eichler system. Teaching plants (excluded fungi) were classified to Crytogamae (13 species) and Phanerogamae (209 species). And Angiosperms were eoncretely dealt in the present curriculum of the primary school. 4. Because Eichler system does not show the phylogenetic relationship in the plant classification, we propose the modified system to be able to adopt in the primary school curriculum. 5. The number of plants appearing in nature subject as materials for experiment were 32 species. Their appearing frequencies were high in some plants, such as kidney bean, radish, corn, Spirogyra, and duckweed. We present exchangeable plants far them and reasons to that.