PROBLEM TO BE SOLVED: To provide a self-propelled mower that can restrain the enlargement of a housing.SOLUTION: A self-propelled mower comprises a mower body 200 that travels when the torque of traveling motors 230 is transmitted to a left drive wheel 283 and a right drive wheel, and comprises: a housing 205 in which the traveling motors 230 are provided a rotary blade 244 that is provided in the housing 205 and mows grass and a rotary blade motor 240 that is provided below the housing 205 and rotates the rotary blade 244.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2017,JPO&INPIT【課題】ハウジングの大型化を抑制できる自走式草刈機を提供する。【解決手段】走行用モータ230のトルクが左駆動輪283及び右駆動輪に伝達されて走行する草刈機本体200を有する自走式草刈機であって、走行用モータ230が設けられたハウジング205と、ハウジング205に設けられ、かつ、草を刈る回転刃244と、ハウジング205の下方に設けられ、かつ、回転刃244を回転させる回転刃用モータ240と、を有する。【選択図】図3