A sensing device is provided. The sensing device includes a first receiving electrode, a plurality of first electrodes, and a second electrode. The first receiving electrode extends in a first direction and controlled to a receiver. The first electrodes are connected electrically by a first signal line. At least one of the first electrodes is coupled to and controlled by a transmitter. The second electrode is electrically connected by a second signal line. The first electrodes and the second electrode are disposed on a row which extends in a second direction intersecting the first direction. The first signal line crosses the first receiving electrode and the second electrode.