The present invention provides a wireless communication method of an electronic device, wherein the wireless communication method includes the steps of: receiving a first beacon with TIM comprising an AID of the electronic device; in response to the first beacon with TIM, controlling the electronic device to switch to an active mode from a power saving mode to receive a first packet, wherein a time length of the active mode is less than a beacon period; receiving a second beacon with no TIM, wherein the second beacon with no TIM does not comprise the AID of the electronic device; and in response to the second beacon with no TIM, controlling the electronic device to switch to the active mode from the power saving mode.