[Problem] To improve the energy absorption amount in a region for covering a pillar without increasing the gas generation amount of an inflator and without causing a shortage in the energy absorption amount in a region for covering the vicinity of the end on the hood side of a front glass.
[Resolution means] A pedestrian protecting airbag apparatus includes: an airbag for covering the vicinity of the end on the hood side of a front glass along with at least a part on the lower side of a pillar; and an inflator for supplying gas to the airbag during a collision. The airbag includes: a center chamber for covering the vicinity of the end on the hood side of the front glass; a pillar cover chamber for covering at least the part on the lower side of the pillar; and a support chamber for expanding between this pillar cover chamber and the pillar.