PROBLEM TO BE SOLVED: To provide a reaping pretreatment device of a combine capable of raising up a lodging grain culm and transferring the grain culm efficiently to an auger device.SOLUTION: A grass-dividing device (60) is arranged on the upper side of a side wall (31A) of an auger frame (31) of an auger device (30). In the side view, a front surface (61A) which is a grain culm action surface of the grass-dividing device (60) is formed in an inclined posture rising backward, and a rear surface (61B) which is a grain culm action surface of the grass-dividing device (60) and is linked to the rear end of the front surface (61A) is formed in a more mildly inclined posture rising backward than the front surface (61A).SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】倒伏した穀稈を引き起こし、穀稈をオーガ装置に効率良く移送できるコンバインの刈取前処理装置を提供する。【解決手段】分草装置(60)を、オーガ装置(30)のオーガフレーム(31)の側壁(31A)の上側に配置し、側面視において、分草装置(60)の穀稈作用面である前面(61A)を後上がり傾斜に形成し、分草装置(60)の穀稈作用面であり、且つ前面(61A)の後端部に連なる後面(61B)を、前面(61A)よりも緩やかな後上がり傾斜に形成することにより解決される。【選択図】図1