Over　the　last　couple　of　years,　enterpriser　application　integration　has　taken　a　central　position　in　the　business　world.　As　the　basis　of　the　enterpriser　application　integration,　information　integration　plays　a　very　important　role　in　the　whole　architecture.　The　heterogeneous　database　replication　technology　is　a　main　method　for　data　consistency　of　heterogeneous　data　source.　First,　this　article　sketches　first　the　technique　of　information　integration　and　heterogeneous　database　replication.　The　major　elements　of　the　information　integration　infrastructure　are　the　focus　of　discussion,　with　special　attention　to　the　infrastructure,　baaed　on　heterogeneous　database　replication　technology.　Finally,　the　article　summarized　to　some　characteristics　for　this　infrastructure.