The utility model provides a portable plasma speaker is by zero voltage switch, the power supply inversion device, audio frequency regulation and control device, the high pressure produces the device,sound generating mechanism, a pedestal, DC power supply, heat abstractor constitutes, opening in the middle of the base, the opening of heat abstractor through the base passes the base and installs power supply inversion device high pressure on the base and produce device DC power supply and contact, in time lead away the too much heat that the during operation produced, guarantee during operation normal temperature, this portable plasma speaker uses opening in closing of zero voltage switch controlling means, make the device start rapidly, sensitive reaction, through vocal tone quality and the fidelity of having improved sound of electric arc vibrations, and can work for a long time after this portable plasma speaker internally mounted battery charges, convenient to use person carries.