The present invention relates to a method, for providing guidance during a call waiting state, comprising the steps of: a gesture recognition unit of a user device recognizing a call waiting gesture while a call request signal is being received; when the call waiting gesture is recognized, a call acceptance control unit of the user device executing a switch to a call acceptance state with respect to the call request signal received by the user device; a call waiting control unit of the user device switched to the call acceptance state stopping an operation of a speaker unit or a microphone unit of the user device and executing a switch to a call waiting state; and, if the gesture recognition unit recognizes a call switching gesture, activating the operation of the speaker unit or the microphone unit.