The present disclosure a speaker box including: a lower cover; an upper cover enclosing an accommodating space together with the lower cover; a sounding unit accommodated in the accommodating space. The sounding unit and the upper cover together enclose a front chamber, and the sounding unit. The lower cover and the upper cover together enclose a rear chamber. The speaker box further includes an air-permeable spacer assembly sleeved on an end of the sounding unit located in the rear chamber. The air-permeable spacer assembly includes a frame made of sound-absorbing cotton sleeved on the sounding unit, and an air-permeable spacer connected to a side of the frame close to the lower cover. The rear chamber is filled with sound-absorbing particles, and the air-permeable spacer assembly isolates the sounding unit from the sound-absorbing particles. Compared with the related art, the speaker box disclosure has a better low-frequency acoustic performance.