The invention relates to a rivet shearing device which comprises a pair of scissors (2) for shearing rivets, a positioning assembly (1) for positioning the rivets, a measuring assembly (3) for determining shearing quantity, a limiting assembly (4) for fixing the shearing quantity and a locking assembly (5) for locking the limiting assembly. The pair of scissors (2) is arranged on the positioning assembly (1), the measuring assembly (3) is connected with the positioning assembly (1), the limiting assembly (4) is connected with the measuring assembly (3), and the locking assembly (5) is connected with the limiting assembly (4). The rivet shearing device overcomes the shortcoming that the shearing quantity of the rivet scissors cannot be controlled, the shearing quantity can be locked by adjusting the limiting assembly, and the shearing quantity of the rivets is controlled in a mechanical mode instead of artificial operation.