The present disclosure provides a speaker box including a lower cover, an upper cover, a sounding unit, a blocking wall, a surrounding wall, a communication hole and a gas permeable spacer. The sounding unit, the lower cover and the upper cover enclose a rear chamber. The rear chamber is partitioned into a first rear chamber and a second rear chamber by the blocking wall. The sounding unit is accommodated in the first rear chamber. A sound absorbing chamber having a gas permeable spacer is formed in the first rear chamber. The blocking wall has a communication hole that communicates the sound absorbing chamber with the second rear chamber, and the second rear chamber and the sound absorbing chamber are filled with sound absorbing particles. Compared with the related art, the speaker box of the present disclosure has a simple structure and excellent audio performance, especially excellent low frequency performance.