Oscillation of electrons on the metal surface makes surface plasmon polariton, which works as a guide for the waveguide when an array of holes is perforated on the metal surface. From its plasmonic properties, that kind of structure has a wavelength filtering property. Focusing on this filter characteristic, we have designed a novel MEMS tunable filter based on plasmon photonics. The idea is to make line and space structures and to put one on another vertically such that one would change the gap to control the wavelength filtering effect. By using this structure, we would electromechanically control the surface plasmon. As a preliminary research, we obtained optical properties of line-and-space structures that are crossed, by using the FDTD simulator.