A method and device for activating a preset function in a wearable electronic terminal are disclosed. The method comprises: setting a quick activation command corresponding to a preset function of the wearable electronic terminal in the electronic terminal, so that the quick activation command responds to the touching operation of predetermined type by the user on the touch screen of the electronic terminal; when the electronic terminal is in a working state, detecting a touching event received by the touch screen and confirming that a touching operation of predetermined type happened; and invoking the quick activation command corresponding to the touching operation of predetermined type so as to activate the corresponding preset function. The technical solutions of the present disclosure can quickly activate the preset function simply by touching operations of predetermined type on the touch screen of the electronic terminal.