The present invention relates to a seedling transplanter, and the purpose of the present invention is to provide a seedling transplanter which enables a user to hold the seedling transplanter with one hand and put a seedling into the seedling transplanter with the other hand to plant the seedling, thereby allowing fast work to be achieved without an additional worker and minimizing soil pushed away from side portions of the seedling by the seedling transplanter during planting, such that the seedling can be planted appropriately. To achieve the aforementioned object, a seedling transplanter of the present invention includes: first and second rods which have a bar shape and handles at upper sides thereof, and are hingedly coupled to each other; a first side plate which is positioned at a lower side of the first rod, has a closed rear side, and is inclined inward downward; and a second side plate which is positioned at a lower side of the second rod, has a closed rear side, and is inclined inward downward, such
