A method for detecting pressure on a touch sensing element includes the steps of: providing a first potential difference to two electrodes of a first film; charging a capacitor with a division voltage of the first potential difference; sampling a charged voltage of the capacitor to obtain a plurality of first voltage values and calculating a first voltage variation according to the plurality of first voltage values; comparing the first voltage variation with a threshold value; and post-processing at least one of the first voltage values when the first voltage variation is smaller than the threshold value. The present disclosure further provides an electronic device.