A high-speed full-automatic packing machine is characterized by comprising a frame, and a membrane placing device, a packing bag shaping device, a longitudinal sealing device, a filling device, a sealing device, a cutting device, a bag sending device and a finished product delivery device which are arranged on the frame respectively, wherein the membrane placing device, the packing bag shaping device, the longitudinal sealing device, the sealing device, the bag sending device and the finished product delivery device are arranged sequentially along the conveying direction of a packing material; the filling device is positioned above the longitudinal sealing device; and the finished product delivery device is positioned below the bag sending device. Therefore, the high-speed full-automatic packing machine is capable of manufacturing a packing membrane into a packing bag and packing the packing bag in a filling manner, so that the full-automatic packing with high speed is realized. As a result, the packing cost and the labor intensity are lowered, and the production efficiency is improved.