A kind of fibrous filter made from stainless steel (SS) wire net with image effects has been developed in our institutes. The filtering medium is composed of stainless steel nets, so there are effects of neighboring fibers on different layer on the particle-capturing efficiency. We have studied the mathematics model for this filter in paper . This paper mainly researches the influence of two neighboring fibers arranged in series through computing and analyzing an inline two-fiber model of the filter. The computed results point that this kind of the fiber arrangement in series is not a good choice for the fiber.