The present invention relates to a dielectric barrier discharge plasma jet generating device, wherein a discharge electrode portion in which a plurality of discharge electrodes are disposed is isolated from a lower housing by a separator in a state accommodated in an upper housing, and is formed by combining the upper housing and the lower housing. When gas is supplied into the gas supply chamber and the dielectric barrier discharge (DBD) output power is induced to the discharge electrode, a dielectric barrier discharge plasma jet is generated through a plurality of dielectric tubes corresponding to the plurality of discharge electrodes one-to-one, or , An electrode connection wire (e.g., metal wire or wire) that is coupled to the end of the insulator tube and is connected to the discharge electrode through the insulator tube to a dielectric tube located at a distance from the gas supply chamber to induce dielectric barrier discharge (DBD) output power The dielectric barrier discharge plasma jet is generated through a plurality of dielectric tubes corresponding one to one to the discharge electrode by inserting and disposing them. According to the present invention, multiple plasma jets can be applied to a plurality of locations individually at the same time on a large area of an object. In particular, various types of plasma jets handled in the industrial field through a dielectric tube located at a distance from the gas supply chamber coupled to the end of the insulator tube. And, it is possible to easily and conveniently apply a plasma jet to a plurality of locations with irregular intervals or to treat the surface of an object having a three-dimensional shape.
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