Abstract: An occupant protection device is provided which protects an occupant by inflating a seat bag and a lap bag. When a vehicle collision is detected, gas generators are activated and discharge gas. The gas from one of the gas generators inflates a tube. As a result, a front portion of a cushion pad of a seat cushion is pushed upward or hardened and the hips of the occupant are prevented from moving forward. A lap bag also inflates and restrains the hips of the occupant. In one form, a lap anchor inflates so that pretension is applied to a lap portion and the hips of the occupant are pushed downward. Therefore, the thighs and hips of the occupant are pushed between the lap portion and the front portion of the cushion pad which is pushed upward or hardened and are strongly restrained in the seat.