With　the　development　of　blockchain　technology,　blockchain　technology　has　strong　vitality　in　various　industries　due　to　its　characteristics　of　dispersion,　anti-mite　modification　and　traceability.　Blockchain　technology　allows　trusted　parties　to　trust　transactions　and　realize　value　streams.　Since　there　are　different　values　in　different　chains,　will　the　values　of　different　chains　also　flow?　This　is　a　problem　that　needs　to　be　solved　in　the　cross-chain　interaction.　Under　the　scenario　for　cross-chain　interaction　between　private　chain　or　alliance　chain　between　enterprises,　this　paper　proposes　an　alliance　chain　model　that　can　realize　cross-chain　interaction　between　enterprises.　On　this　basis,　it　analyzes　the　difficulties　of　cross-chain　interaction　technology　and　analyzes　the　model.　At　last,　we　summarize　the　paper.　©　2020,　Springer　Nature　Singapore　Pte　Ltd.