PURPOSE: To consider so that sufficient support strength can be obtained to a torsional load acting on a car body support device at machine frame side work time by a back hoe in a loader installed vehicle having a front loader in a front part and the back hoe in a rear part.

CONSTITUTION: In a vehicle where a boom 28 of a front loader 6 and cylindrical masts 27 to install a boom cylinder 29 to vertically swing the boom 28 are arranged and fixed in the vertical direction on both left and right sides of a front part of a car body 8 and a back hoe 7 having stabilizers 14 on both left and right sides of a machine frame 13 is installed in a rear part of the car body 8, the masts 27 are formed in a downward opening shape. Leg bodies 44 which can freely protrude and retreat in the vertical direction from lower end openings of the masts 27 and support a load from the car body 8 by contacting with the ground by protruding from the lower end openings of the masts 27 and fluid pressure cylinders 45 to protrude and retreat the leg bodies 44, are housed in the masts 27.