A machine tool comprising: a main spindle for gripping a workpiece (W1); a headstock on which the main spindle is provided; a driving unit which moves the headstock in a main spindle axial direction (D1), the driving unit being provided with a feed mechanism extended in the main spindle axial direction (D1) and a front end supporter which rotatably supports a front end of the feed mechanism ; characterized in that the machine tool further comprises: a first front cover mounted on the headstock in a first position between the main spindle and the feed mechanism with respect to a diameter direction (D2) from a main spindle axis (AX1) toward the feed mechanism , wherein the headstock is movable in the main spindle axial direction (D1) with the first front cover being moved along with the headstock ; and a second front cover mounted on the front end supporter non-movable in the main spindle axial direction (D1) and in a second position between the main spindle and the feed mechanism with respect to the diameter direction (D2); wherein part of the feed mechanism is covered by both of the first front cover and the second front cover when at least part of the first front cover is on the rear side of the second front cover . a main spindle for gripping a workpiece (W1); a headstock on which the main spindle is provided; a driving unit which moves the headstock in a main spindle axial direction (D1), the driving unit being provided with a feed mechanism extended in the main spindle axial direction (D1) and a front end supporter which rotatably supports a front end of the feed mechanism ; characterized in that the machine tool further comprises: a first front cover mounted on the headstock in a first position between the main spindle and the feed mechanism with respect to a diameter direction (D2) from a main spindle axis (AX1) toward the feed mechanism , wherein the headstock is movable in the main spindle axial direction (D1) with the first front cover being moved along with the headstock ; and a second front cover mounted on the front end supporter non-movable in the main spindle axial direction (D1) and in a second position between the main spindle and the feed mechanism with respect to the diameter direction (D2); wherein part of the feed mechanism is covered by both of the first front cover and the second front cover when at least part of the first front cover is on the rear side of the second front cover . a first front cover mounted on the headstock in a first position between the main spindle and the feed mechanism with respect to a diameter direction (D2) from a main spindle axis (AX1) toward the feed mechanism , wherein the headstock is movable in the main spindle axial direction (D1) with the first front cover being moved along with the headstock ; and a second front cover mounted on the front end supporter non-movable in the main spindle axial direction (D1) and in a second position between the main spindle and the feed mechanism with respect to the diameter direction (D2); wherein part of the feed mechanism is covered by both of the first front cover and the second front cover when at least part of the first front cover is on the rear side of the second front cover . <EOS>