Acording to the problems in traditional grain food ration filling machine, and from the automatic machine hardware designs, algorithms, software design, anti-jamming design of multiple perspective, quantitative packing of fuzzy-PID control algorithm of dynamic weighing, and optimal chip disposal procedures, simplified the peripheral hardware design and reduced development costs. Field test results show, the new packaging control machines is stable, divide errors reduced by 94.6%, and can meet the needs of grain food production.