The　inter-country　input-output　table　is　good　at　presenting　the　complicated　interdependent　relation　among　various　industrial　sectors　from　a　global　perspective,　with　a　clear　embodiment　of　the　number　of　resources　one　sector　may　gain　from　its　upper-stream　sectors　on　the　global　value　chain.　Therefore,　relevant　researches　mainly　take　the　advantage　of　depicting　the　topological　structure　of　the　economic　system　through　the　measurements　on　intermediate　products　as　an　indication　of　input　and　output　relation,　so　as　to　shed　lights　on　analyzing　the　rules　of　value　flows　and　industrial　structural　features.　In　this　paper,　a　new　analytical　framework　of　relatively　competitive　advantages　of　economies　is　established.　It　involves　distinguishing　functions　of　industrial　sectors　on　the　global　value　chain　with　bipartite　graph　theory　and　extracting　inter-sector　competitive　relationships　through　resource　allocation　process.　Furthermore,　it　introduces　network-based　quantitative　indices　to　measure　the　competition　status　on　the　level　of　the　industrial　sector　and　country　respectively,　taking　scarcity　of　industrial　resources　into　consideration.　Finally,　it　carries　out　scenario　simulation　to　analyze　impacts　on　China　and　five　Portuguese-speaking　countries＇　competitive　advantage　and　weakness　by　three　kinds　of　scenarios　and　three　cases.　Results　achieved　from　simulations　on　the　trade　show　there　is　no　mutual　win-win　for　both　China　and　PSCs,　if　relevant　international　trade　policy　had　been　formulated　without　consideration　their　market　sizes　and　industrial　layouts.　However,　we　are　positive　and　optimistic　to　find　good　solutions　for　both　sides　in　the　following　studies.　(C)　2019　Elsevier　B.V.　All　rights　reserved.