Encyrtidae, belonging to Chalcidoidea (Hymenoptera), includes about 4,000 species in 460 genera worldwide. Many of the members are very important biological control agents of insect pests such as scale-insects (Hemiptera, Coccoidea). Many species have been relatively well studied in various taxonomic and biological fields because of economical and ecological importance of Encyrtidae. However, Korean encyrtids are poorly studied so far. In this presentation we will introduce the current status of taxonomy and biological characteristics of Encyrtidae. In addition further study plans are also presented.