To provide a laser beam machine, wherein the problem of affecting machining accuracy due to the defective pass line of the workpiece of a metal plate is solved by positioning vacuum devices below the workpiece and varying the position in accordance with the movement of a machining head, and the efficient operation of the machine is made possible.

This invention relates to the laser beam machine 1 including: the machining head 3 for machining a workpiece metal plate W which is movable on the X-axis and the Y-axis which are orthogonal; a plurality of vacuum devices which are movable on the U-axis and the V-axis which are parallel respectively to the X-axis and the Y-axis while holding the workpiece W; and an installation table 6 for moving and collecting products P which are cut off from the workpiece W, wherein the vacuum devices 2 have a plurality of suction supporting means for holding the workpiece W and the plurality of vacuum devices 2 are moved to predetermined positions in accordance with the movement of the machining head and the shape and the size of the workpiece W, so that the workpiece W is held.