In　a　large-scale　networking　scenario　with　massive　distribution　of　devices,　data　are　independently　generated　and　maintained　by　multiple　domains.　To　solve　the　problem　of　isolated　data　islands　in　multi-domain,　this　paper　designs　a　multi-domain　data　sharing　model　based　on　consortium　chain.　Aiming　at　the　problems　of　low　efficiency　and　lack　of　consideration　of　intra-domain　consensus　processes　in　traditional　data　sharing　schemes,　this　paper　optimizes　the　security　and　efficiency　of　data　sharing　from　two　parts:　inter-domain　chain　and　intra-domain　chain.　To　ensure　fine　granularity,　flexibility　and　security　of　the　access　control　process　in　inter-domain　chain,　this　model　combines　the　Attribute-Based　Access　Control　(ABAC)　with　smart　contract,　and　a　permission　grading　mechanism　is　designed　to　solve　the　problem　of　low　retrieval　efficiency　in　this　access　control　model　through　reducing　the　retrieval　range　by　grading　and　matching　Policy　set.　Considering　the　problem　of　high　delay　of　node　consensus　in　the　large-scale　networking　environment　of　intra-domain　chain,　a　layered　practical　Byzantine　fault　tolerance　optimization　(LPBFT)　algorithm　with　introducing　a　reputation　model　is　designed,　which　greatly　improves　the　efficiency　and　security　of　the　intra-domain　consensus.　The　consortium　chain　model　is　designed　and　implemented　from　the　perspectives　of　inter-domain　and　intra-domain,　which　optimized　the　security　and　efficiency　of　the　multi-domain　data　sharing　model.　Finally,　a　prototype　system　is　implemented　based　on　Hyperledger　Fabric,　and　the　validity　of　the　model　is　verified　from　the　aspects　of　inter-domain　access　control　and　intra-domain　consensus　algorithm.