In a mid-mount type riding-type rice planting machine in which an engine is disposed in a rear portion of a running body, a structure of the running body is simplified, and a barycenter thereof is lowered. The running body 1 includes the engine 18, a running transmission case 19, and a rear axle case 25. The running transmission case 19 and the rear axle case 25 are connected to each other through a joint member 32. The engine 18 is supported from front and behind by a front bracket 48 provided on the joint member 32 and a rear bracket 49 provided on the rear axle case 25. The joint member 32 is fixed to a lower portion of the running transmission case 19. Hence, the engine 18 can be lowered in height, and the barycenter of the running body can be lowered.
