A touch device including a first touch-sensing unit, a second touch-sensing unit, a touch-sensing strip module, and a control module is disclosed for controlling functions performed by an electronic device. The first and the second touch-sensing unit respectively generate a first and a second touch signal while touched. The touch-sensing strip module includes sequentially arranged M third touch-sensing units, and the touch-sensing strip module generates a first sliding signal when the third touch-sensing units are touched in a first predetermined sequence. The control module drives the electric device to perform a first function while receiving the first touch signal and the first sliding signal simultaneously, and the control module drives the electric device to perform a second function while receiving the second touch signal and the first sliding signal simultaneously.