An air bag device for automobile comprising a side air bag member arranged at a vehicle body side portion or a vehicle seat in a folded state, expanded by being supplied with a gas upon a vehicle being impacted from the side or rolling over, and which deploys between a passenger seated on the vehicle seat and the vehicle body side portion, and a head portion protection air bag member which deploys in a curtain shape in a downward direction inside of a vehicle compartment up to a position of overlapping a deploying region of the side air bag member in a vehicle width direction, and which has a shape that fits with the deployed side air bag member.