A speaker is provided in the present disclosure. The speaker includes a shell, a magnetic system and a vibrating system received in the shell. The magnetic system includes a first magnet module and a second magnet module opposite to each other for forming a magnetic gap. The vibrating system includes a membrane module and a coil assembly for driving the membrane module to vibrate. The coil assembly includes a coil arranged in the magnetic gap and a coil support for supporting the coil; at least one of the first magnet module and the second magnet module includes a soft magnet unit, the soft magnet unit is arranged adjacent to the magnetic gap and faces the coil.