A finger assistive device is formed by connecting a second member to a first member so as to be rotatable in a bending direction of a finger. Further, either one of the first member and the second member is provided with a relative position changing section adapted to change a relative position of the second member to the first member in a direction different from the rotatable direction. According to this configuration, by changing the relative position of the second member to the first member in accordance with a length and a shape of the finger of the wearer, the finger assistive device can be customized (adjusted) so that the first member and the second member fit the mounting positions of the finger. As a result, it becomes possible to appropriately mount the finger assistive device to the finger and appropriately assist in bending the finger.
