The invention belongs to the field of magnetron sputtering, and particularly relates to a target-sputtering self-circulating cooling device for the target cooling technology. The device comprises a target and a cooling structure. The target is cooled through a synthetic jet method. The target is connected to the upper end of a metallic cathode in a butt joint manner and sealed at the upper end of the metallic cathode. A synthetic jet generator is fixed in a synthetic jet cavity to generate intermittent jetted gas. The jetted gas is stored through the synthetic jet cavity and is sprayed out along a spray nozzle. The sprayed jetted gas impacts on fins on the inner side of the target to achieve the cooling effect, the gas obtained after temperature rise enters a cooling passageway, and the cooled gas returns to the synthetic jet cavity again to be recycled.