The fruit house fly Atherigona orientalis (Schiner), which is belonging to Muscidae, Diptera, is classified as quarantine pest and first reported in Korea at 2016. Annual occurrence and spatial distribution pattern of A. orientalis was biweekly monitored from April to December, using fly-wine trap in Korea. A. orientalis was first found in Gwangyang in June and increased populations by September, 2017. It is considering that A. orientalis is difficult to survive during winter season because this species is belonging to non-diapausing insect, so it may possible to be overwintering in warm place such as green house of paprika and tomato during winter. Based on this survey, A. orientalis is considered to be excluded from quarantine pests.