A lawn-mowing vehicle is provided in which a facing-the-ground surface of a lawn-mowing unit can manually be shifted. The lawn-mowing units of the lawn-mowing vehicle can be rotated. There is provided a first connection mechanism that connects each of the lawn-mowing units to the arm, in such a way that the lawn-mowing units can be shifted by rotation between their work positions and the biased side positions that are biased toward the sides of the carriage. There is provided a second connection mechanism that connects each of the lawn-mowing units to the first connection mechanism so as to be rotatable, in such a way that the lawn-mowing units placed at the biased side positions can be shifted from a facing-the-ground posture to an outward posture.
