A finger joint drive device includes a first base section disposed on a back of a hand, a second base section rotatable with respect to the first base section, a drive section adapted to rotate the second base section, and an attachment mechanism. Further, the attachment mechanism is provided with a first curved portion having contact with a palm of the hand in an attached state, and a second curved portion and a third curved portion adapted to connect the first curved portion to the first base section. The first curved portion is arranged along a life line in the attached state. Therefore, the finger joint drive device can stably be fixed to the hand, and the degree of freedom of the fingers can sufficiently ensured.
