PROBLEM TO BE SOLVED: To achieve miniaturization of a work machine and highly efficient operation of an actuator.SOLUTION: The work machine includes: an engine 200 an axial gap power generation body 202 that is connected with a crank shaft 216 of the engine 200 and generates electric power by the power of the engine 200 transmitted through the crank shaft 216 and a driving wheel motor 114 and a rotation pawl motor 116 that are directly operated by electric power generated by the axial gap power generation body 202.