Abstract: The bullseye structure is a classic nano-optical structure. This article designs a new bullseye structure with coaxial nano-pillars. We used the time-domain finite difference method (FDTD) to study the EOT of the structure. Studies show that the radius and height of the column have a significant impact on the transmission characteristics. The proper choice of the radius and height of the column will support the maximum transmission intensity. In addition, the bullseye structure has a higher sensitivity to the environmental refractive index. Theoretical analyses show that the enhancement transmission effect of the structure is caused by the interaction between the local surface plasmon and the surface plasmon polarization. This provides a new idea for the development and application of nano-photonic components.