Multipurpose portable speaker box

The utility model provides a multipurpose portable speaker box comprising a main speaker box and an auxiliary speaker box which can be combined by mutual magnetic suction, and a connection part. The main speaker box comprises a first circuit board, a first speaker, and a first passive radiator assembly arranged in a first housing. The auxiliary speaker box comprises a second circuit board, a second speaker, and a second passive radiator assembly arranged in a second housing. The second circuit board receives audio electrical signals transmitted by the first circuit board through the connection part. Sound directions of the first speaker and the second speaker are both oriented towards the connection part. The first passive radiator assembly and the second passive radiator assembly are combined by magnetic suction or are separated. With the speaker box provided by the utility model, the defect that common speaker boxes cannot be used under a combined state is effectively solved, and bass effect is improved. The speaker box is portable and is convenient to use. The speaker box has the functions of water resistance, dust resistance, and drop resistance.