A loudspeaker includes: a magnetic circuit assembly with a magnetic flux space; a vibrating diaphragm covering a first end of the magnetic flux space; and a voice coil assembly in the magnetic flux space and coupled to a side of the vibrating diaphragm facing the magnetic flux space. The voice coil assembly includes at least one group of conductive coils and a heat accumulator in thermally conductive contact with the at least one group of conductive coils, and the heat accumulator absorbs and accumulates heat when a temperature of the voice coil assembly reaches a target temperature.