This　paper　reports　on　the　controlled　synthesis　of　W18O49　nanorods　using　pyrolysis-reduction　process　through　tuning　both　H-2　gas　flow　and　heating　temperature.　The　results　suggest　that　W18O49　nanorods　will　grow　well　when　calcined　at　650　degrees　C　for　2　h　at　10　l/h　H-2　gas　flow　rate.　Using　GSAS　software　the　fitted　lattice　parameters　of　obtained　W18O49　are　given,　that　is,　a:　18.340　angstrom,　b:　3.788　angstrom,　c:　14.025　angstrom,　beta:　115.168　degrees,　by　the　Rietveld　refining　X-ray　diffraction　pattern.　The　result　of　sheet　resistance　measurement　of　samples　indicates　that　pure　W18O49　nanorods　exhibit　a　resistivity　as　low　as　0.068　X　Omega.cm.　(C)　2018　Elsevier　B.V.　All　rights　reserved.