To support a seated person such as a care receiver so as to facilitate the standing up of the seated person not only to contribute to an increase in health of the seated person but also to reduce the load of a care giver or the like.

This standing-up support chair 1 for supporting the standing-up of the seated person includes at least a seat surface body 3 having a seat surface formed at the upper surface thereof and the leg body 2 which supports the seat surface body. The seat surface body 3 is constituted to be swung between a seated seate and a forward inclined state when the seated person stands up centring around the shaking fulcrum 31 provided at the front part of the seat surface body 3. Further, this standing-up support chair includes an urging member 6 for urging the seat surface body 3 so as to forward incline the same, and a locking member 30c capable of locking the seat surface body in the seated state.