PURPOSE: To evenly press a blade on a snow surface even when the body of a vehicle is inclined and keep the high clearing efficiency of snow, by detecting the hydraulic oil pressure of pressure chamber to press down the grader blade and operating the deviation of hydraulic pressure and driving a hydraulic cylinder device.

CONSTITUTION: Snow is removed by a grader blade 30 while slanting the body along the snow face, in a road with a large grade from the center to the shoulder, a gradient road, or a bend of a mountain path, etc. At that time, when the body leans to the right for instance, the pressing force of the left side hydraulic cylinder 50 pressing the left side of the grader blade decreases in comparison with the right side. And further, a controller 70 instructs the driving output to the hydraulic control valve 78L by receiving a pressure signal of a pressure sensor 76. And the hydraulic cylinder 50 extends and the left side of blade 30 moves down. And the blade 30 gets in contact with the snow face almost evenly in the full length thereof and snow is smoothly and efficiently removed at a uniform pressure. In this way, an inexpensive snow-clearing vehicle 10 with a simple structure can be obtained.