A switch module for activating a hibernation mode of an electronic device is disclosed. The electronic device includes a casing and a hibernation switch installed inside the casing. The switch module includes a sliding member, a push button and an activating member. The sliding member is disposed on an inner side of the casing in a slidable manner. The push button is slidably disposed on an outer side of the casing and connected to the sliding member for driving the sliding member to slide relative to the casing. The activating member is disposed on the sliding member for activating the hibernation switch when the push button drives the sliding member to slide to an activating position, so as to activate the hibernation mode of the electronic device.