PROBLEM TO BE SOLVED: To provide a paddy field working machine that can be suitably loaded with a fertilizer housing body containing fertilizer to be added to a fertilizing device.SOLUTION: A paddy field working machine comprises: a traveling machine body 13 a driving seat that is arranged in the traveling machine body 13 a rear step 26 that is located on the rear side of the driving seat a fertilizing device 18 that is located on the upper side of the rear step 26 and a mounting table 41 that is located next to the rear step 26 and on which a fertilizer bag B containing fertilizer to be added to the fertilizing device 18 can be mounted.COPYRIGHT: (C)2015,JPO&INPIT【課題】施肥装置へ補充する肥料が入った肥料収容体を好適に積載できる水田作業機を提供する。【解決手段】走行機体13と、走行機体13に配置された運転座席と、運転座席の後方側に位置する後部ステップ26と、後部ステップ26の上方側に位置する施肥装置18と、後部ステップ26の横隣に位置し、施肥装置18へ補充する肥料が入った肥料袋Bを載置可能な載置台41と、が備えられている。【選択図】図3