The utility model provides a ton bag packing machine is provided with the feed inlet in the top of feed hopper case, is provided with the discharge gate in the below of feed hopper case, is provided with the switch in the lower part of feed hopper case, the feed hopper case passes through force sensor to be connected on first lateral frame, is provided with the elevating platform in the top of base, be provided with the dust absorption pipe in the top of feed hopper case, the dust absorption pipe is connected through first dust absorption pipeline and first dust shaker, the feed inlet of the top setting of feed hopper case passes through charge -in pipeline and is connected with raw material conveyor, be provided with tubaeform dust absorption mouth in the side of wrapping bag, the dust absorption mouth passes through second dust absorption pipe connection to second dust shaker. The utility model discloses a tonner feed hopper case, the whole dust removal is sealed automatically, simple structure, convenient operation, the maintenance cost is low, and steady quick, degree of automation is high, alleviates the human labor burden greatly, can the wide application, there is certain market spreading value.