Abstract: The invention relates to a machine for cutting down and shaping trees, designed to cut down, strip and truncate trees, consisting of a support and cutting down-stripping-truncating equipment likely to be adapted to a self-propelling device, said equipment carrying a movable framework on which the cutting-truncating and stripping elements are positioned, a machine wherein the components thereof are substantially secured along a one and same axis, the stripping element carrying at least two blades surrounding the tree and at least two rollers with barbs the positioning of which can be adjusted by means of jacks, the axis along which the trunk is pulled between the rollers coinciding with the axis of the trunk between the blades.