An electronic device and an input element thereof are provided. The electronic device includes a first body, a second body and an input element. The second body with an accommodating groove is connected to the first body. The input element is detachably accommodated in the accommodating groove of the second body and includes a pressure sensing layer, a vibration layer and a transmission layer. The pressure sensing layer of the input element receives a force to generate a signal. The vibration layer vibrates according to the signal. The transmission layer is disposed between the pressure sensing layer and the vibration layer and configured to transmit the vibration generated by the vibration layer.