A wearable action-aware device is disclosed. The wearable action-aware device includes a clothing body, a signal receiving and computing element, and a conductive line made of conductive fabric. Two ends of the conductive line are electrically connected to the signal receiving and computing element, respectively, to form a circuit, and both the signal receiving and computing element and the conductive line are disposed on the clothing body. An exposed side of the conductive line has electrical conductivity, and the circuit is disposed on a part of the clothing body corresponding to a part of a body that needs to be measured. Action information of a user can be measured when the user wears the present invention wearable action-aware device.