OCCUPANT PROTECTION DEVICE

In an occupant protection device, an airbag disposed in a region of a lap belt of a seat belt includes a bag body and a conduit connected to an inflator disposed near a lower end of a seat portion of a seat. The airbag is held by the lap belt in a folded state. The conduit is disposed substantially along the lap belt while being held by a conduit holder. The conduit holder is formed of a material having flexibility and higher rigidity than the conduit, is disposed substantially along the conduit, and has both end sides fixed to a seat side and a bag body side, respectively, by a seat-side fixing portion or a bag body-side fixing portion.