A method for check weighing of materials, which determines, by a check weighing device, the weight of materials which have been proportioned and weighed before being processed by internal mixers, wherein the check weighing device comprises: a main transmission device for driving materials to move; a weighing device for weighing materials; an induction device for detecting materials which is at least fixed on one side of the weighing device; a sensing device; and a suspension mechanism which is connected with the sensing device and the weighing device, the suspension mechanism comprising ball-shaped components arranged at ends of the suspension mechanism and connected with concave brackets, metal pulling cords connected with the ball-shaped components, and an adjusting device, wherein both ends of the suspension mechanism are respectively fixedly connected with the sensing device and the concave brackets on the weighing device through the ball-shaped components at the suspension mechanism in an engaged manner, wherein the sensing device is configured to physically deform under the action of the downward force exerted by the suspension mechanism, wherein the method comprises the steps of: driving the materials to move forward using the main transmission device; detecting the materials using the induction device; stopping the rotation of the main transmission device, the materials exerting a vertical downward force due to gravity on the weighing device, said vertical force being transferred to the ball-shaped components through rigid parts of the weighing device; determining the weight of materials based on the deformation of the sensing device; comparing the weighing readings of check weighing with the prior weighing readings of materials which have been proportioned; and upon completion of said comparison, driving the materials using the main transmission device to move forward, so as to complete check weighing of the materials. a main transmission device for driving materials to move; a weighing device for weighing materials; an induction device for detecting materials which is at least fixed on one side of the weighing device; a sensing device; and a suspension mechanism which is connected with the sensing device and the weighing device, the suspension mechanism comprising ball-shaped components arranged at ends of the suspension mechanism and connected with concave brackets, metal pulling cords connected with the ball-shaped components, and an adjusting device, wherein both ends of the suspension mechanism are respectively fixedly connected with the sensing device and the concave brackets on the weighing device through the ball-shaped components at the suspension mechanism in an engaged manner, wherein the sensing device is configured to physically deform under the action of the downward force exerted by the suspension mechanism, driving the materials to move forward using the main transmission device; detecting the materials using the induction device; stopping the rotation of the main transmission device, the materials exerting a vertical downward force due to gravity on the weighing device, said vertical force being transferred to the ball-shaped components through rigid parts of the weighing device; determining the weight of materials based on the deformation of the sensing device; comparing the weighing readings of check weighing with the prior weighing readings of materials which have been proportioned; and upon completion of said comparison, driving the materials using the main transmission device to move forward, so as to complete check weighing of the materials.