To make it possible to execute multipurpose works by easily making a front loader attachable/detachable in TLB in which the front loader is set in the front of a tractor and a back hoe is set in the rearside thereof.

An integral shaped setting frame 41 is attached to a vehicle body 2A of a tractor 2 constituting the vehicle body 2A directly connecting a transmission case 7 to the rear part of an engine 6. A loader fitting part 47 detachably fitting a side frame 19 of the braceless front loader 3 provided with a side frame 19 for fitting a boom 20 and a boom cylinder 21 shaking the boom 20 is provided in the front part of the setting frame 41. A back hoe fitting part 61 for detachably mounting the back hoe 4 in the back part of the setting frame 41 is provided.