A sensing module (4, 4', 4") is disclosed in the present invention and includes a body attaching member (40, 40'), a base module (41, 41'), a transmission member (42, 42') and a first sensor (43). The body attaching member (40, 40') is attached to a human limb and disposed on the base module (41, 41'). The transmission member (42, 42') is coupled to and moved with the body attaching member (40, 40'). The first sensor (43) is disposed on a side of the body attaching member (40, 40') and separate from the body attaching member (40, 40'). When the body attaching member (40, 40') is driven to move along a direction by the human limb, the body attaching member (40, 40') drives the transmission member (42, 42') to activate the first sensor (43) to generate a first signal (α1). Since the first sensor (43) is separate from the human limb, the first sensor (43) is not affected by muscle swelling and skin friction during movement. Accordingly, the actuating module (44) is able to drive an exoskeleton member more precisely.
