PROBLEM TO BE SOLVED: To provide a mid-mount type farm work machine capable of being used while replacing plural work parts including a swing arm having a different length with respect to one vehicle body.SOLUTION: A farm work machine 1 includes: a vehicle body 10 including a front wheel 11 and rear wheels 12 a work part 20 attached to the vehicle body 10 in an attachable/detachable manner. The work part 20 is arranged between the front wheel 11 and the rear wheels 12. The work part 20 includes: a swingable swing arm 22 and a work part body 21 connected to a front end 221 of the swing arm 22. The vehicle body 10 includes a vehicle body side connection part connected to a rear end 222 of the swing arm 22. Accordingly, the work part body 21 and the swing arm 22 is unitized and the unitized work part 20 is attached/detached to/from the vehicle body 10. Thereby, with respect to one vehicle body 10, plural work parts 20 including the swing arm 22 having a different length can be replaced and used.
