Mini sound box

The utility model discloses a mini sound box which comprises a box body and a loudspeaker. The mini sound box is characterized in that a telescopic mechanism is disposed inside the box body, the loudspeaker is arranged on the telescopic end of the telescopic mechanism, a gear reducer is disposed inside the box body, the gear reducer is used for controlling movements of the telescopic mechanism, the telescopic mechanism comprises a first telescopic joint and a second telescopic joint connected with the first telescopic joint in a sleeved mode, the loudspeaker is positioned inside the first telescopic joint, sealing silica gel is arranged inside the telescopic mechanism so as to guarantee tightness of cavities, and a battery and a printed circuit board assembly (PCBA) panel are arranged at the bottom portion inside the box body. According to the mini sound box, the telescopic mechanism can extend outwards when a sound box works to expand the size of the cavities, so that the sound cavity size can meet requireme