Provide is an assistant robot capable of performing standing actions in accordance with the seating posture of persons in need of assistance and the physical characteristics of persons in need of assistance. An assistant robot 10 includes a base table 21, a vertical movement operation section 15c which enables a person in need of assistance M1 or an assistant to operate changes of the vertical-direction location of the holding section 13, a first control section 17a which controls the actuator 45 in accordance with an operation in the vertical movement operation section 15c and moves the holding section 13 in a vertical manner, a memory section 16 which stores in advance action trajectories of the actuators 45, 32a1, and 32b1 which are intended to transfer the holding section 13 from a standard seating posture to a standard standing posture, a correction section 17b which corrects the action trajectories of the actuators 45, 32a1, and 32b1 on the basis of the vertical-direction location of the holding section 13 moved using the first control section 17a and the vertical-direction location of the standard seating posture, and a second control section 17c which controls the actuators 45, 32a1, and 32b1 on the basis of the corrected action trajectories and transfers the holding section 13 to a predetermined standing posture.
