Abstract: The vortex induced by DBD plasma actuator under unsteady excitation is an important factor in plasma flow control. It is of great significance to study the characteristics of vortex induced by DBD plasma actuator under static atmosphere for further understanding of plasma DBD flow control mechanism. In this paper, the structures of vortex induced by DBD plasma actuator under static atmosphere are studied by high-frequency PIV and high-speed schlieren system. The trajectory of induced vortex movement was analyzed by the λ₂ definition, and the influence of burst frequency on induced vortices under unsteady excitation is obtained. The number of vortices induced by DBD is strictly in correspondence with the burst frequency. The induced vortex's cores move along the wall surface from 16° to 21°. As the burst frequency increases, the scales of induced vortices gradually become smaller and closer to the wall. Also, the interaction between the induced vortices at different burst frequencies during the movement of induced vortices was analyzed.