A salt lamp includes a main housing having a receiving cavity, a lighting arrangement and an audio arrangement. The lighting arrangement is provided underneath the main housing for generating illumination toward the receiving cavity. The audio arrangement includes a first speaker assembly provided in the receiving cavity. The first speaker assembly includes a first acoustic chamber secured on a top portion of the main housing, a second acoustic chamber extended from the first acoustic chamber, and a speaker provided on the acoustic chamber and arranged to position adjacent to a plurality of through audio holes formed on the main housing. The salt lamp is arranged to deliver an optimal mix of negative ions, lighting effect and audible sound to ambient environment.