PROBLEM TO BE SOLVED: To provide a transplanter in which planting of seedlings is automatically corrected when it is detected that planting depth of planting seedlings, planting depth or posture is not appropriate. SOLUTION: A traveling vehicle body 15, a planting tool 11 for planting seedlings in a field, a planting clutch 420 for turning on and off transmission of driving force to the planting tool 11, and a planting clutch 420 at a predetermined cycle. A drive unit 470 that is turned on and off, an inter-plant switching device 640 that changes a period for operating the drive unit 470 to change the planting stock of seedlings, and a control unit that operates the drive unit 470 according to the setting of the inter-plant switching unit 640. The first seedling detection sensor 900 that includes 800 and detects the planting of seedlings is provided. The cycle of operating the drive device 470 is changed according to the elapsed time between planting the seedlings. [Selection diagram]【課題】 苗の植付株間、植付深さや植付姿勢が適切でないことが検知されると、自動的に苗の植付が修正される移植機を提供すること。【解決手段】 走行車体１５と、苗を圃場に植付ける植付具１１と、植付具１１への駆動力の伝動を入切する植付クラッチ４２０と、植付クラッチ４２０を所定の周期で入切する駆動装置４７０と、駆動装置４７０を作動させる周期を変更して苗の植付株間を変更する株間切替装置６４０と、株間切替装置６４０の設定に合わせて駆動装置４７０を作動させる制御部８００を備え、苗の植え付けを検知する第１苗検知センサ９００を設け、制御部８００は、第１苗検知センサ９００が後方向の二ヵ所以上の苗の植付を検知すると、二ヵ所以上の苗を植え付ける間の経過時間により、駆動装置４７０を作動させる周期を変更する構成とする。【選択図】 図１２
