The utility model provides an ultrathin loudspeaker-type radiator and a damping ultrathin radiator. The ultrathin loudspeaker-type radiator comprises a heat conduction chamber, a vibrating diaphragm, a voice coil and a magnetic device generating opposite magnet loop circuits vertical to the sides at two opposite sides of the voice coil. The vibrating diaphragm separates the heat conduction chamber into two air chambers. The side walls of the two air chambers are equipped with air holes. The voice coil and the vibrating diaphragm are fixed integratedly. The connection terminal of the voice coil extends outside the heat conduction chamber and used for receipting input of alternating current. The magnetic device interacts with the alternating current in the voice coil and generates Ampere force to drive vibration of the voice coil and the vibrating diaphragm in the heat conduction chamber to discharge or inhale the air in the two air chambers from the corresponding air holes. The magnetic device is compatible with an occasion of opposite current at two opposite sides of the voice coil, the magnetic field intensity of the magnetic device in the horizontal direction is raised, higher magnetic circuit performance is obtained at the same power, the vibration intensity of the voice coil is raised, the heat radiation capability of the radiator is raised, and technical support is provided for an ultrathin structure.