Because some larger propellant particles cannot satisfy the rapid and accurate weighing, design a kind of dynamic automatic powder weighing control system. This system mainly uses the belt delivering ammo technology, pneumatic shock disc feeding technology and in a certain range setting called dose values are weighing technology, through the glancing-loading and accurate-loading dosing proportion control method and control in advance control strategy, to achieve a large granular propellant dynamic automatic weighing, and has been in a propellant automatic weighing machine project in the successful application. The practice proves that the technology reduces the labor intensity of workers, improves the production efficiency.