This study was conducted to investigated the distribution and ecological character of Black Soldier Fly(BSF), Hermetia illucens, to determine effects of BSF on composing ability to waste-food. The distribution of BSF was defined in all parts of the country in Korea. Its main habitat was found to be areas near cattle sheds, manure sheds, living waste dump grounds, and food waste dump grounds. Observed characteristics of BSF by developmental stage may be summarized as follows: eggs were a long oval shape of 886.9±19.7 ㎛ in major axis and 190.1±9.7 ㎛ in minor axis; they were 24.0±1.6 ㎍ in weight. One adult insect laid 1001±247 eggs in quantity; days to hatch from eggs (27℃, 60% R.H.) were 81.3±12.5 hours. Larvae which were hatched appeared to be close to white and turned into pale yellow as being last instar larva. Last instar larva ranged from 20.7±1.1 mm in size, the length of larval stage was approximately 15～20 days. Pupae exhibited red brown, 19.2±1.1 mm in size; pupal state lasted 15.5±1.4 days for female, 14.7±1.4 days for male, exhibiting the tendency of males having shorter period than females. Adult insects were sized about 13～20 mm and colored black.