A band saw machine (1, 91) for cutting a cut portion (Wa) of a workpiece set at a cutting position on a feed direction while running an endless band saw blade, the machine (1, 91) comprising: a base that has a cutting fluid reservoir for collecting cutting fluid at an upper portion thereof; a saw blade housing that is provided at the base movably in an up-down direction; a pair of saw blade wheels (27, 29) that are provided rotatably in the saw blade housing to support the band saw blade and distanced from each other in a feed width direction perpendicular to the feed direction, the band saw blade being wound around the saw blade wheels (27, 29) in a tilted-down state so as to regulate a maximum cut length of the workpiece by a diameter thereof; a saw blade guide (31, 33) that guides the band saw blade so as to make tooth ends of the band saw blade perpendicular to the workpiece at the cutting position; a downstream main vise that is provided on a downstream side of the cutting position on the base and has a pair of downstream main vise jaws (75, 77) for clamping a product correspondent portion (Wm) of the workpiece; and a discharge table (81, 93) for discharging a product to an outside of the cutting fluid reservoir, wherein a working-side running area of the band saw blade running through the cutting position and a working-opposite-side running area of the band saw blade running at a position distanced from the cutting position in the feed direction are positioned within the cutting fluid reservoir in a plan view, an upstream end of the discharge table (81, 93) is positioned on a downstream side from a wheel center line connecting rotational centers (27c, 29c) of the pair of saw blade wheels (27, 29), and the downstream main vise is configured to be movable in the feed direction from the downstream side of the cutting position to the upstream end (81 u) of the discharge table within the cutting fluid reservoir in a plan view. a base that has a cutting fluid reservoir for collecting cutting fluid at an upper portion thereof; a saw blade housing that is provided at the base movably in an up-down direction; a pair of saw blade wheels (27, 29) that are provided rotatably in the saw blade housing to support the band saw blade and distanced from each other in a feed width direction perpendicular to the feed direction, the band saw blade being wound around the saw blade wheels (27, 29) in a tilted-down state so as to regulate a maximum cut length of the workpiece by a diameter thereof; a saw blade guide (31, 33) that guides the band saw blade so as to make tooth ends of the band saw blade perpendicular to the workpiece at the cutting position; a downstream main vise that is provided on a downstream side of the cutting position on the base and has a pair of downstream main vise jaws (75, 77) for clamping a product correspondent portion (Wm) of the workpiece; and a discharge table (81, 93) for discharging a product to an outside of the cutting fluid reservoir, wherein a working-side running area of the band saw blade running through the cutting position and a working-opposite-side running area of the band saw blade running at a position distanced from the cutting position in the feed direction are positioned within the cutting fluid reservoir in a plan view, an upstream end of the discharge table (81, 93) is positioned on a downstream side from a wheel center line connecting rotational centers (27c, 29c) of the pair of saw blade wheels (27, 29), and the downstream main vise is configured to be movable in the feed direction from the downstream side of the cutting position to the upstream end (81 u) of the discharge table within the cutting fluid reservoir in a plan view.