A saw blade protector for a cutting device having a table for placing thereon a workpiece, a saw blade protruding from an upper surface of the table, and a riving knife disposed in front of the saw blade in a moving direction of the workpiece for cutting the workpiece and positioned in line with the saw blade. The saw blade protector includes a guard plate constructed to cover the saw blade, a holding frame constructed to be mounted on an upper portion of the riving knife and to be able to support the guard plate, and an adjusting device constructed to be able to adjust a position of the holding frame relative to the upper surface of the table.