The present invention relates to a device for generating a dielectric barrier discharge (DBD) plasma jet. The device generates a DBD plasma jet through a plurality of dielectric tubes corresponding to a plurality of discharge electrodes one to one when gas is supplied into a gas supply chamber, which is isolated from a lower housing by a separator and formed by combination of an upper housing and a lower housing, and DBD output power is induced to the discharge electrodes while a discharge electrode unit having the plurality of discharge electrodes disposed thereon is accommodated in an upper housing; or generates a DBD plasma jet through the plurality of dielectric tubes corresponding to the plurality of discharge electrodes one on one by inserting and arranging electrode connection lines (for example, a metal wire or an electric wire), which are coupled to ends of insulator tubes and connected to the dielectric tubes positioned at a long distance from the gas supply chamber and to the discharge electrodes through the insulator tubes to induce the DBD output power. According to the present invention, the device can simultaneously and individually apply multiple plasma jets to a plurality of points in a large area of an object, and in particular, can process the surface of an object having various and three-dimensional shapes handled in an industry through the dielectric tubes which is coupled to the ends of the insulator tubes and positioned at the long distance from the gas supply chamber, or can easily and conveniently apply plasma jets to a plurality of points at irregular intervals.
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