Lath-like　PbWO4　has　been　synthesized　via　precipitation　method　by　using　a　template　of　cetyltrimethylammonium　bromide　(CTAB).　The　prepared　products　were　characterized　with　X-ray　diffraction　(XRD),　scanning　electron　microscopy　(SEM),　thermal　analysis,　infrared　spectroscopy　(IR)　and　photoluminescence　spectrum.　The　results　show　that　crystal　structure　of　as-prepared　PbWO4　changes　from　tetragonal　phase　to　monoclinic　phase,　and　its　morphologies　vary　from　turricula　to　final　lath-like　structure　when　prolonging　the　aging　time.　This　phase　transfer　leads　to　the　increase　of　IR　intensity　at　571　cm-1,　while　has　little　influence　on　thermal　stability.　The　fluorescence　emission　spectra　of　PbWO4　with　different　aging　time　are　nearly　the　same,　and　all　exhibit　a　strong　blue　emission　peak　at　378　nm.