The invention provides an anvil tool and a forging device and relates to the technical field of forging equipment. The anvil tool comprises an upper anvil. The upper anvil is shrunk inwards from top to bottom along the side contour of the longitudinal section, in the length direction, of the upper anvil. A boss is arranged on the bottom face of the upper anvil. The boss is shrunk inwards from top to bottom along the side contour of the longitudinal section, in the length direction, of the boss. The boss and the upper anvil are of an integrated structure. When a pressing machine drives the upper anvil to downwards press a workpiece, the boss can downwards compress the workpiece, the boss on the bottom face of the upper anvil can replace a cushion plate, the cushion plate does not need to be arranged between the upper anvil and the workpiece, manual operation can be reduced, the machining efficiency is improved, machining consumed time is shortened, and the use convenience of the anvil tool is improved.