To provide a chair helping easily and stably hold the body by facilitating the hands of an occupant to grip the fronts of the arms through a process of a posture change between a sitting position and a standing/sitting assisting position.

The chair is provided with a chair body 10 having a seat 11, the back 12 and a pair of the right and left arms 13 and 13, a drive mechanism 20 having a dc motor or the like capable of selectively changing a posture of the chair body 10 at least in the standing/sitting assisting position and in the sitting position, an operation part 30 comprising a selector switch or the like for controlling the drive mechanism 20 to have positional options of the chair body 10 and gripping projections 40 disposed on the tops of the fronts of the arms 13 and 13 of the chair body 10.