The present invention relates to a wearable actuation device (1) for the assisted movement of the fingers of a user's hand, comprising a supporting platform (10), intended to be positioned on the back of the hand and provided with fixing means for wearing in a removable way the device (1) on the hand. The device also comprises at least an articulated first finger module (2), connected with one end to the supporting platform (10) and suitable to be positioned and connected to a finger of the hand for guiding a movement of flexion or extension of the finger itself, and a motor (11) provided with an output shaft, supported by the supporting platform (10) and suitable to generate a rotational motion in two opposite directions of the motor shaft (11). The device (1) also comprises first transmission means of the first finger module (2) to allow an actuation at least of the first finger module (2).