A touch panel includes electrode lines and a detecting circuit. The detecting circuit includes driving units and detecting units. The driving units are configured to sequentially output driving signals to the electrodes lines according to a first clock signal, so as to change the voltage levels of the electrode lines. Two ends of each of the electrode lines are respectively coupled to a driving unit and a corresponding detecting unit. The detecting units are configured to sequentially scan the voltage levels of the electrode lines according to a second clock signal and to output scan signals, in which the first clock signal and the second clock signal have different frequencies. The detecting circuit generates a detecting signal according to the scan signals.