PROBLEM TO BE SOLVED: To provide a technique capable of excellently assisting motion of a thumb of a hand.SOLUTION: A driving device comprises: a base member capable of being disposed on a palm of a hand； a first member being provided to the base member and being capable of being disposed on a thumb of the hand； a second member rotatable in a first rotational direction with respect to the first member； and a rotation section rotating the second member in the first rotational direction with respect to the first member. Further, a distance between the base member and the second member can be changed.SELECTED DRAWING: Figure 1【課題】手の親指の動きを良好に補助することのできる技術を提供する。【解決手段】駆動装置は、手の甲に配置可能なベース部材と、ベース部材に設けられ手の親指に配置可能な第１部材と、第１部材に対して第１回動方向に回動可能な第２部材と、第１部材に対して第１回動方向に第２部材を回動させる回動部と、を備える。そして、ベース部材と第２部材との距離が可変である。【選択図】図１
