A gas filling method includes the steps of: intermittently transferring a bag (50) to arrange the bag (50) at a gas blowing processing position (P1); inserting a blowing nozzle (11) into a gas guide path (56) of the bag (50) in the gas blowing processing position (P1); pinching the blowing nozzle (11) arranged in the gas guide path (56) from outside of the bag (50) with a pair of pinching members (15) in the gas blowing processing position (P1); causing the blowing nozzle (11) to eject the gas in such a manner that the gas is sent to the gas accommodation portion (54) in the gas blowing processing position (P1) in a state where the blowing nozzle (11) is pinched via the bag (50) by the pair of pinching members (15); and closing the gas accommodation portion (54) in an airtight manner in the gas blowing processing position (P1) in a state where the blowing nozzle (11) is arranged in the gas guide path (56).
展开▼
