PROBLEM TO BE SOLVED: To solve such the problem that a depth setting tool for setting a target depth with depth automated control is disposed in the same level as a dispose part of a travel gear shift lever and can cause a wrong operation.SOLUTION: In a tractor, a dispose part 21 of a work machine lifting operation lever 11 is disposed in a first recess part 40 and a dispose part 20 of a travel gear shift lever 8 is disposed in a substantially same height as an arm rest 18. A second recess part 41 is disposed between the dispose part 20 and the arm rest 18 and a depth setting tool 28 is disposed in the second recess part.SELECTED DRAWING: Figure 3【課題】深さ自動制御の目標深さを設定する深さ設定具は、走行変速レバーの配設部と同一レベル配設され、誤操作を生じることがある。【解決手段】第1凹み部40に、作業機昇降操作レバー11の配設部21が配置され、アームレスト18と略同じ高さに走行変速レバー8の配設部20が配置される。該配設部20とアームレスト18の間に第2凹み部41が配置され、該第2凹み部に深さ設定具28が配置される。【選択図】図3