Cerambycidae, a family of Coleoptera (Insecta: Chrysomeloidea), include approximately 33,000 species from the world and 357 species are recorded from the Korean peninsula. The members of this family are regarded as insect pests because they bore inside of host plants, otherwise, some lepturine species are pollinators of flowering plants. In Korea National Arboretum (Korea Forest Service), we are carrying out investigation of cerambycids biodiversity in Korea and neighboring countries. As results, we present some results of studies on host plants of Korean Cerambycidae and further study plans in a new project, "interactions between phytophagous insects and plants including microorganisms" in Korea National Arboretum.