An assistance robot capable of supporting a sitting operation of a care receiver in various usage states. In the assistance robot, operation processing based on the sitting path includes: a retracting process for retracting a holding member and lowering or raising the holding member to a fixed sitting position at which a buttock portion of the care receiver is positioned at a specified height from a floor surface and above a seat; and a lowering process for lowering the holding member from the fixed sitting position until the care receiver is sitting on the seat.