A　new　porphyrinic　metal-organic　framework　(MOF),　[Co(DCDPP)]center　dot　5H(2)O,　was　designed　and　constructed　by　using　a　bifunctional　ligand,　5,15-di(4-carboxylphenyl)-10,20-di(4-pyridyl)　porphyrin　(H2DCDPP).　This　MOF　features　a　three-dimensional　framework　structure　with　open　channels,　surrounded　by　high-density　non-coordinating　carboxylic　groups,　and　exhibits　a　high　proton　conductivity　of　3.9　x　10(-2)　S　cm(-1)　at　80　degrees　C　and　97%　relative　humidity,　higher　than　most　conductive　MOFs.　Moreover,　it　also　shows　excellent　stability　in　boiling　water　and　cyclic　proton　conduction.