Negative ion generation device, air treatment equipment and control method of air treatment equipment

The invention provides a negative ion generation device, air treatment equipment and a control method of the air treatment equipment. The negative ion generating device comprises a power supply module and a dielectric barrier discharge module, the dielectric barrier discharge module is provided with a first electrode and a second electrode, and the power supply module is electrically connected with the dielectric barrier discharge module and is set to be capable of outputting bias driving voltage to the dielectric barrier discharge module. The instantaneous voltage difference between the first electrode and the second electrode is increased relative to the non-biased state. According to the negative ion generating device, the concentration of released negative ions can be effectively increased under the condition that the ozone concentration is not increased substantially.