The work aims to improve the work efficiency of multi-function bag packaging machine. In order to realize the continuous and high speed operation of the packaging, a technical scheme of continuous automatic bag opening compensation was researched and put forward based on the rotary filling scheme. A technical scheme and mechanism of automatic bag opening compensation for continuous rotary filling was designed. Such design reduced the dwell and waiting time of the bag opening filling in the traditional bag packaging machine. Different from the form of intermittent bag-making package, the design achieves continuous bag opening filling and improves the work efficiency of multi- function bag packaging machine.