In　order　to　obtain　a　high-performance　resin　matrix　for　advanced　polymeric　composites　(APC),　a　new　condensed　polynuclear　aromatic　(COPNA)　resin　containing　allyl　was　synthesized　using　1-hydroxy　naphthalene,　1,　4-benzenedimethanol,　allyl-chlorine,　and　so　on.　The　chemical　structures　of　the　COPNA　resin　were　characterized　by　FT-IR　and　1H-NMR,　and　the　copolymerization　reactivity　of　the　COPNA　resin　and　bismaleimide　(BMI)　was　studied　through　gel　analysis.　Moreover,　TG-DTG　was　employed　to　study　the　thermal　behavior　of　the　copolymer　of　the　COPNA　resin　and　BMI.　The　results　show　that　the　COPNA　resin　has　high　reactivity　with　BMI　due　to　the　active　group　of　allyl,　and　the　resulting　copolymer　possesses　excellent　thermo-stability　and　high　coke　value.