The present invention relates to a device for indoor air purification and sterilization which excites indoor air by arc discharge to decompose bad odor and sterilize air, wherein an excited state is maintained by applying a magnetic field and the contact time between molecules activated by arc and pollutants is extended, thereby improving air purification and sterilization effects, and the noise generated by arc discharge is reduced by a silencer and ozone and static electricity are removed by a filter which removes ozone and a metal filter for removing static electricity, respectively, thereby enabling very suitable configuration for indoor air purification and sterilization.
