Miniature speaker

A miniature speaker, including:

• a frame having a base plate, a cover plate covering the frame and forming an accommodating space;
• a vibrating system fixed on the frame;
• a magnetic circuit system for driving the vibrating system to vibrate, the magnetic circuit system including a main magnet fixed on the base plate, a first pole plate attached to the main magnet, two first side magnet components arranged on two opposite side surfaces of the main magnet symmetrically;
• each of the first side magnet components comprising a first side magnet, a second pole plate and a second side magnet stacked sequentially from the base plate along a direction toward the cover plate;
• wherein
• a magnetizing direction of the first side magnet is opposite to that of the main magnet, and a magnetizing direction of the second side magnet is opposite to that of the first side magnet.