A battery switching method applicable to an electronic device is provided. The electronic device comprises a first battery and a second battery. The method comprises: (a) switching the electronic device to a sleep mode from a normal mode; (b) switching a power supply of the electronic device to the second battery according to a removing signal triggered by removing the first battery; (c) switching the power supply of the electronic device to the first battery according to an inserting signal triggered by inserting the first battery; (d) updating parameters of the first battery; and (e) switching the electronic device to the normal mode from the sleep mode.