The invention relates to a full-automatic packaging and stacking device used for BHT. The full-automatic packaging and stacking device comprises a spiral feeding machine, a stock bin, a spiral feeding machine, a full-automatic packaging machine, a bag-sewing machine, a right-angle bag guiding machine, a conveyor, a metal testing machine, a quality testing machine, a removing shaping conveyor, a bag pressing shaping machine, a capturing conveyor, a robot palletizer and a transporting machine. One spiral feeding machine is sequentially connected with the other spiral feeding machine, the full-automatic packaging machine, the bag-sewing machine, the right-angle bag guiding machine, the conveyor, the metal testing machine, the quality testing machine, the removing shaping conveyor, the bag pressing shaping machine, the capturing conveyor, the robot palletizer and the transporting machine through the stock bin. The full-automatic packaging and stacking device can achieve full automatic packaging of produced antioxidant BHT, automatic spiral feeding, full-automatic packaging, bag sewing, metal testing, quality testing, bag pressing shaping, capturing conveying and stacking are effectively achieved, the production time is shortened, and the production efficiency is improved.