The objective of the present invention is to provide: a cushion cell with a new structure which is designed to disperse stresses when the cushion cell is in an inflated state such that excellent durability is achieved and in which a large support area for the human body can be obtained with excellent space efficiency relative to a square shaped space for disposal in an inflated state and a cushion body with a new structure using the same. The cushion cell (10) is formed with a fluid chamber (36) inside and the height of the cushion cell (10) can be changed by adjusting the pressure in the fluid chamber (36). The planer shape of the cushion cell (10) in a deflated state is a square shape, and each side part (46) has a curved shape protruding outwards.
