A mobile soil-working device, having a machine frame, a drive for at least one insertion tool that can be moved up and down and inserted into the ground and pulled out again, the insertion tool being in a starting position at a predefined insertion angle before insertion into the ground and when in the ground executing a pivoting movement, which is superposed on the up and down movement, about a first pivot axis in the direction of a first pivot direction owing to the movement of the machine frame in the direction of travel, and having a returning means, which is coupled to the insertion tool and moves the insertion tool back into the starting position after its exit from the ground by pivoting the insertion tool in a second pivoting direction opposite to the first pivoting direction.