Achieving　grain　security　is　a　long　and　arduous　task,　meanwhile　it　is　a　basic　national　policy　of　China.　Grain　logistics　is　a　particularly　important　link　in　the　process　of　ensuring　grain　security.　For　a　long　time,　grain　logistics　in　China　usually　use　the　way　of　package　transport　which　is　inefficient　and　wasteful.　In　recent　years,　China　gradually　began　to　carry　out　the　transport　way　in　four　bulks　mode　around.　Only　grain　reserves　amount　are　above　the　warning　line　of　the　grain　security　scattered　reserves,　grain　security　can　be　guaranteed.　This　paper　uses　the　gray　prediction　method　to　predict　the　quantity　of　the　grain　bulk　storage　in　the　next　three　years　in　Fujian　Province　and　use　MATLAB.　For　quantify　achieving,　then　carry　out　square　test　and　error　verification.　Comparison　with　the　results,　the　paper　could　provide　some　useful　advises　for　future　the　four　bulks　mode　engineering.　©　2016,　Aussino　Academic　Publishing　House.　All　rights　reserved.