PROBLEM TO BE SOLVED: To provide a planting and seeding work machine and an automatic traveling control system for the planting and seeding work machine capable of accurately carrying out automatic running control while avoiding contact with an obstacle. SOLUTION: A satellite positioning unit capable of detecting the position of a traveling body C using a navigation satellite, a work device capable of planting and seeding work of seeds and seedlings in a field, and a plurality of traveling units C traveling while performing the planting and seeding work. The target travel route LM of the target travel route LM can be set in parallel with each other based on the field shape, the automatic work control unit that can control the work device based on the position of the travel vehicle C, and the target travel route LM. An automatic control that controls traveling of the traveling body C along the target traveling route LM and traveling of the traveling body C along the target traveling route LM to the next target traveling route LM based on the position of the traveling body C And an automatic traveling control unit capable of controlling reciprocating traveling. [Selection diagram] Fig. 6【課題】障害物との接触を回避しながら精度よく自動走行制御が可能な植播系作業機及び植播系作業機の自動走行制御システムの提供。【解決手段】航法衛星を用いて走行機体Ｃの位置を検出可能な衛星測位ユニットと、圃場に対する種苗の植播作業が可能な作業装置と、走行機体Ｃが植播作業を行いつつ走行する複数の目標走行経路ＬＭを圃場形状に基づいて互いに平行に並ぶ状態で設定可能な経路設定部と、走行機体Ｃの位置に基づいて作業装置を制御可能な自動作業制御部と、目標走行経路ＬＭに沿って走行機体Ｃが走行することと、目標走行経路ＬＭに沿って走行機体Ｃが走行した後に次の目標走行経路ＬＭへ旋回走行することと、を走行機体Ｃの位置に基づいて制御する自動往復走行制御が可能な自動走行制御部と、が備えられている。【選択図】図６
