PROBLEM TO BE SOLVED: To provide a paddy field working machine which can simultaneously perform a seeding operation and an agrochemical application in a state where an agrochemical is effective.SOLUTION: A traveling machine of a paddy field working machine comprises: a feeder performing a seeding operation in which a seed rice c is delivered by an unhulled rice delivery unit from an unhulled rice tank and the delivered seed rice c is supplied to a farm field； and a material supply device performing an agrochemical application in which an agrochemical b is delivered by a material delivery unit from a material tank and the delivered agrochemical b is supplied to the farm field. The feeder and the material supply device are formed in which a seeding place M by the feeder and an agrochemical applied place K by the material supply device are overlapped in the plane view, and they are positioned in the cross direction of the traveling machine. The material supply device is arranged in which the material delivery unit and the unhulled rice delivery unit are in a line in the cross direction of the traveling machine.【課題】播種作業と施薬作業とを、薬剤を効かせ易い状態で同時に行うことが可能な水田作業機を提供する。【解決手段】種籾ｃを籾繰出部によって籾タンクから繰り出し、繰り出した種籾ｃを圃場に供給する播種作業を行なう供給装置と、薬剤ｂを資材繰出部によって資材タンクから繰り出し、繰り出した薬剤ｂを圃場に供給する施薬作業を行なう資材供給装置とを走行機体に備えてある。供給装置による播種箇所Ｍと、資材供給装置による施薬箇所Ｋとが、平面視において重なった状態で走行機体の前後方向に沿った方向に位置するように構成してある。資材繰出部が、平面視において、籾繰出部に対して走行機体前後方向に沿った方向に並ぶように、資材供給装置を配備してある。【選択図】図６
