The present invention provides an electronic apparatus and a detecting pulse method adapted for the apparatus. The apparatus includes a capacitance touch-control unit configured to sensing the pressure from a pulse. When the capacitance touch-control unit senses the change of the pressure of the pulse, a capacitor value of the unit correspondingly changes. The apparatus does the spectrum analysis and takes the Fourier Transform for the changed capacitor value to generate a waveform diagram between frequency and amplitude.