A filling apparatus comprising: a straight conveyor line configured to intermittently convey spout-equipped bags, which are suspended so that spouts protruding from one side of the spout-equipped bags are located on an upper side and the bags are located on a lower side, wherein the bags are flat before being filled with a liquid material, wherein the conveyor line is further configured to intermittently convey the spout-equipped bags with their width direction being oriented along a movement straight line defined by the direction in which the spout-equipped bags are conveyed; a printing apparatus disposed at a position along the conveyor line and configured to print manufacturing information on the suspended spout-equipped bags; and nozzles (141, 345) arranged in the middle of the conveyor line and configured to fill the suspended spout-equipped bags with a liquid material through the spouts, wherein the conveyor line is further configured to convey the spout-equipped bags so that fronts of the spout-equipped bags directly face the printing apparatus, wherein the conveyor line comprises holds and a multi-hook including a plurality of hooks, the plurality of hooks is provided at equal intervals along the movement straight line, the multi-hook is configured to depart from the movement straight line after the spout-equipped bags suspended by the hooks are intermittently conveyed by a distance n times the interval, bypass the movement straight line, and return to an original position along the movement straight line, the n is a positive integer, and the holds are respectively arranged at positions in which the intermittently conveyed spout-equipped bags stop, and are configured to obtain the spout-equipped bags from the multi-hook holding the stopping spout-equipped bags prior to the multi-hook departing from the movement straight line. a straight conveyor line configured to intermittently convey spout-equipped bags, which are suspended so that spouts protruding from one side of the spout-equipped bags are located on an upper side and the bags are located on a lower side, wherein the bags are flat before being filled with a liquid material, wherein the conveyor line is further configured to intermittently convey the spout-equipped bags with their width direction being oriented along a movement straight line defined by the direction in which the spout-equipped bags are conveyed; a printing apparatus disposed at a position along the conveyor line and configured to print manufacturing information on the suspended spout-equipped bags; and nozzles (141, 345) arranged in the middle of the conveyor line and configured to fill the suspended spout-equipped bags with a liquid material through the spouts, wherein the conveyor line is further configured to convey the spout-equipped bags so that fronts of the spout-equipped bags directly face the printing apparatus, wherein the conveyor line comprises holds and a multi-hook including a plurality of hooks, the plurality of hooks is provided at equal intervals along the movement straight line, the multi-hook is configured to depart from the movement straight line after the spout-equipped bags suspended by the hooks are intermittently conveyed by a distance n times the interval, bypass the movement straight line, and return to an original position along the movement straight line, the n is a positive integer, and the holds are respectively arranged at positions in which the intermittently conveyed spout-equipped bags stop, and are configured to obtain the spout-equipped bags from the multi-hook holding the stopping spout-equipped bags prior to the multi-hook departing from the movement straight line.