A　simple　analytical　model　was　formulated　to　describe　the　coupling　between　the　broadband　particle　plasmon　resonance　(PPR)　and　the　narrowband　waveguide　resonance　mode　(WRM)　in　wave-guided　metallic　photonic　crystals　(MPCs).　The　PPR　and　the　WRM　are　processed　independently　to　enable　direct　examination　of　their　interaction.　The　enhanced　transmission　resulting　from　the　PPR-WRM　coupling　in　wave-guided　MPCs　can　be　simply　interpreted　as　the　destructive　interference　between　directly　transmitted　light　with　lower　intensity　and　the　diffraction　of　the　waveguide　propagation　mode　with　higher　intensity.　(c)　2012　Society　of　Photo-Optical　Instrumentation　Engineers　(SPIE).　[DOI:　10.1117/1.JNP.6.063513]