AIRBAG DEVICE

[Issue] An objective of providing an airbag device enabling efficiently suppressing injury of the occupant during an emergency. [Resolution Means] A representative structure of the airbag device according to the present invention includes an inflator that is installed on a vehicle and is able to supply gas, an airbag cushion that expands and deploys in front of the seating position of the vehicle occupant based on the gas, and at least one internal tether with a first end connected to the seating position side inside the airbag cushion and a second end connected to the vehicle front side inside the airbag cushion . The airbag cushion is characterized by a recessed concave part formed through pulling of the internal tether on the center of the seating position side.