The present disclosure discloses a speaker including a frame with two open ends, a vibration system sealing one open end of the frame, a magnetic circuit system, and an air-permeable mesh. The magnetic circuit system includes a yoke sealing another open end of the frame, a first magnet, a second magnet arranged at two opposite sides of the first magnet, a through hole penetrating the yoke and arranged at another two opposite sides of the first magnet, and an extension wall bending and extending from a side of the through hole close to the first magnet in a direction close to the vibration system. The air-permeable mesh is attached to the yoke and covers the through hole. Compared with the related art, the speaker disclosed by the present disclosure has a better acoustic performance.