The　coherent　scattering　noise　properties　were　investigated　adequately　of　a　blue　laser　sensitized　holographic　photopolymer　material.　The　noise　gratings　formed　in　this　kind　of　photopolymer　material　with　single-beam　exposure　was　examined.　The　measurement　of　bidirectional　scattering　distribution　function　(BSDF)　was　used　for　reference　to　study　the　spatial　distribution　properties　of　scatter　noise.　The　experimental　results　showed　that　the　scattering　noise　buildup　was　faster　in　those　photopolymers　with　higher　initial　transmittance　which　owe　to　more　monomer　or　more　photosensitizer　dye,　and　faster　buildup　of　scattering　noise　is　corresponding　to　larger　FWHM　(full　width　at　half-maximum　of　scanning　readout)　of　scattering　noise　in　spatial　distribution.