The　flow　of　information　security　is　commonly　controlled　by　different　trust　domains　in　the　distributed　environment.　The　information　sharing　in　a　unique　trust　domain,　however,　is　also　an　essential　issue　to　be　further　studied.　Fortunately,　the　Trusted　Computing　technology　provides　a　nice　solution　to　elaborate　the　security　of　information　sharing　in　the　same　trust　domain.　In　this　paper,　trusted　terminal　is　established　through　Trusted　Computing　technology,　and　the　sharing　information　in　trust　domain　is　bounded　with　corresponding　equipment　group　to　achieve　the　division　of　trusted　sub-domain,　and　the　information　is　shared　securely　in　a　same　trusted　sub-domain,　which　can　prevent　malicious　user＇s　illegal　operation　in　the　same　trust　domain.　©　2009　IEEE.