A wearable action-assistance device is provided with which an assistant can intuitively perform settings for operation of the device while assisting a wearer during walking and without leaving the wearer. An operation unit (140) includes a display (141), task selection buttons (142), joint buttons (143), a stop button (144), a start button (145), arrow keys (146) and a confirmation operation button (147). As shown in the drawing, the joint buttons (143) are operation buttons for displaying assistive force settings and operating states relating to each joint on the display (141). The joint buttons (143) consist of a left hip joint button (143a), a left knee joint button (143b), a right hip joint button (143c) and a right knee joint button (143d), and the respective joint buttons are disposed on the upper left, lower left, upper right and lower right of the operation unit (140).
