A cushion of a passenger air-bag apparatus includes a cushion body section including an upper chamber portion that is deployed downwardly along a windscreen from a roof, and a lower chamber portion that is formed to be connected with a lower portion of the upper chamber portion, is formed to be in contact with an upper portion of a crush pad, and formed to be deployed toward a seated person; and an inner tether section installed inside the cushion body section to divide the upper chamber portion and the lower chamber portion, and configured to have a communication hole portion forming a path through which the air is introduced from the upper chamber portion to the lower chamber portion.