Automatic weighing and packing machine for a wide range suitable for grain, oil, sugar, starch, wheat flour, feed, food processing, protein, fiber, Bran, seeds, chemicals, fertilizers, cement, warehouses, terminals and other quantitative automatic packaging of industry production and management. Function features--set feeding, and said heavy, and clip bags, and packaging, and conveying, and sewing package for one--computer automatically measurement, and can continuous job, and measurement accurate--used high-speed sampling processing instrument and the digital frequency technology, precision high, adapted different packaging material characteristics, operation simple flexible--used pneumatic executive institutions, and work reliable, and maintenance simple--perfect of exhaust system /p>