The Ministry of Environment in Korea published 'The Compilation of National List of Indigenous Insect Species ofthe Korean Peninsula' in 1996 including 11,853 species. The National Institute of Biological Resources (NIBR) originallycompiled the national species list of insects to establish a national inventory of endemic biological assets with the joinedefforts from all distinguished Korean taxonomists since 2008. For the convenience of taxonomists participating in theproject concurrently, the NIBR has developed the NIBR inventory description method and inventory system from 2008to 2017. Until September 2017 in this study, the NIBR has established the national insect inventory of 17,493 speciesincluding Collembola. The insect fauna of the Korean Peninsula comprises 579 families from 30 orders. The largest ordersare Coleoptera (114 families, 4,489 species), Lepidoptera (72 families, 3,868 species), Hymenoptera (63 families, 3,581species), Hemiptera (88 families, 2,102 species) and Diptera (79 families, 2,128 species). The fractions of the main insectorders in the fauna of the Korean peninsula correspond to those in the Holarctic temperate zone.