PROBLEM TO BE SOLVED: To provide a reaping work machine which includes a reaping device having a right/left pair of reaping rotation bodies and can efficiently reap even a reaping object such as grass positioned at a separated place on a side of a machine body.SOLUTION: The reaping work machine includes: a machine body 3 travel-driven by a travel device 2, 2 and a reaping device 4 attached on and supported by the machine body 3 and including a right/left pair of reaping rotation bodies 59A, 59B. The reaping device 4 is arranged while offset on one right/left side of the machine body 3 in a front face view so as to protrude partly to a side from the machine body 3. The reaping rotation body 59A on a side close to a width direction center of the machine body 3 is arranged such that a right/left position of the rotation center is positioned on an outer side from a side edge 2a, 2a on the offset side of the travel device 2.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2017,JPO&INPIT【課題】本発明は、左右一対の刈取回転体を有する刈取装置を備え、機体の側方の離れた場所に位置する草等の刈取対象物も効率的に刈取ることが可能な刈取作業機を提供することを課題とする。【解決手段】走行装置2,2´によって走行駆動される機体3と、該機体3に取付支持され且つ左右一対の刈取回転体59A,59Bを有する刈取装置2とを備え、該刈取装置2を、正面視で機体3の左右一方寄りにオフセットして配置することにより、その一部を機体3から側方に突出させ、上記機体3の幅方向中心に近い側の刈取回転体59Aを、その回転中心の左右位置が前記走行装置2の上記オフセット側の側端2a,2a´よりも外側になるように配置する。【選択図】図7