A passenger protection apparatus for a vehicle includes: an inflator configured to generate gas upon receiving a predetermined actuating signal; and an airbag body folded and configured to deploy by supplying the gas from the inflator to the airbag body. The airbag body includes a predetermined area on which adhesive is applied. The predetermined area adheres to an adherend when the airbag body is deployed. An adhesive force of the adhesive is decreased by a predetermined action.