By modeling the multilayered structure of metal-dielectric films as an anisotropic material based on the effective medium theory, we have theoretically analyzed the optical transmission of the structure. Optical polarization property of the proposed structure with different film orientations has been explored. The theoretical analysis and full-wave EM simulations based on the finite element method show that, in the lossless case, transmission for a normal incident TE wave is quite different from the transmission for a TM wave by adjusting the material parameters and the film orientation of the proposed structure. The result shows that the structure has property of optical polarization manipulation. Based on this particular property, we propose a multilayer structure composed of alternating silicon carbide and silicon dioxide films for polarization beam splitter at wavelength of 10.6 μm. We believe that the optical property of this metal-dielectric multilayered structure could provide a new way for the polarization manipulating of the optical devices.