By　analyzing　and　proving　the　correlation　between　the　detection　capability　of　a　short　duplicate　code　statistical　feature　and　the　probability　of　cumulating　short　duplicate　codes,　the　dimension　of　short　duplicate　codes,　a　method　to　improving　the　detection　capability　of　a　short　duplicate　code　statistical　feature　was　found.　Then,　a　blind　detection　method　for　image　steganography　using　short　duplicate　codes　statistical　model　for　Hilbert　scanning　sequences　was　proposed.　The　proposed　method　used　Poisson　distribution　test　to　detect　the　stego-message　based　on　the　statistical　feature　of　short　duplicate　code　with　same　elements　in　LSB　Hilbert　scanning　sequences.　So,　the　proposed　method　could　make　full　use　of　Hilbert　curve　to　maintain　the　good　properties　of　local　correlation,　and　could　not　only　use　the　correlation　of　adjacent　elements,　but　also　use　the　correlation　of　elements　in　local　regions.　Theoretical　analysis　and　experiments　show　that　the　proposed　method　can　effectively　improve　the　detection　rate　under　the　condition　of　effectively　controlling　the　false　alarm　rate.