Disclosed is a seedling transplanter with enhanced planting accuracy. The seedling transplanter comprises a travel device, a seed transportation part to transport seeds, and a seed planting device to plant the seeds in farm, wherein the seeds are transported to the planting supply position by the seed transportation part. The seed planting device is configured to have a holding tool for holding the seeds at the planting supply position operate along a long path back and forth to plant the seeds in farm. The seed planting device comprises soil coverers at both right and left sides, which cover soil from both right and left sides of the planted seeds, and a compressing tool configured between the right and left side soil coverers and moved downward to compress soil on the top of the planted seeds. Viewing from the sides of the seedling transplanter, the compressing tool is accommodated inside right and left side the soil coverers under the compressing state and is configured at a position deviated to the back of the soil coverers.本發明的課題係提高栽種精度。本發明為一種苗移植機，係具備有：行駛裝置；苗搬送部，用以搬送苗；以及苗栽種裝置，將由苗搬送部搬送到栽種供給位置的苗栽種在農田中；苗栽種裝置係使夾持栽種供給位置的苗的苗栽種夾持工具在前後較長的軌跡上作動而將苗栽種在農田中，且具備有：左右的覆土工具，在栽種後的苗的左右進行覆土；以及壓地工具，在左右的覆土工具之間朝下運動而按壓栽種後的苗的上方的土壤；壓地工具係構成為在壓地狀態下在機體側面觀視時收容在左右的覆土工具內，且配置在以覆土工具為基準時偏移在後側的位置。
