The utility model provides a flange gasket cutterbar. The utility model discloses a flange gasket cutterbar includes: driving piece, supporting mechanism, scale and cutting tool, the supporting mechanism is rotatable to be connected with the driving piece, and the scale is fixed on the supporting mechanism, and the length direction of scale is different with the direction of rotation of supportingmechanism, and the supporting mechanism is parallel with cutting tool, and cutting tool sets up on the scale, and the length direction that cutting tool can follow the scale slides, and the driving piece is used for driving the scale and cutting tool rotates around the supporting mechanism. The utility model provides a flange gasket cutterbar is through setting up driving piece, supporting mechanism, scale and cutting tool to the supporting mechanism is the centre of a circle, winds the supporting mechanism through driving piece drive scale and cutting tool and rotates, accomplishes flange gasket outer fringe and inner edge and evenly cuts, and the cutting atress is even, can process out the flange gasket of regular shape.