An electronic device includes a volume adjustment activating module, a distance detection module, and an adjusting module. The volume adjustment activating module is configured for activating the distance detection module to measure distances between a volume adjusting member and the distance detection module. The distance detection module includes at least one distance sensor, the at least one distance sensor is configured for detecting distances between the volume adjusting member and the distance detection module to obtain a plurality of distance measure values. The adjusting module is configured to adjust a volume of the electronic device according to the distance measure values.