An　innovative　intelligent　coating　for　in-situ　and　initiatively　monitoring　structure　health　has　been　carried　out　in　this　paper.　The　specific　intelligent　coating　has　the　ability　to　monitor　crack　initiation　and　propagation　on　surfaces　and　within　lap/rivet　joints.　Normally　the　developed　intelligent　coating　is　consisted　of　three　layers:　the　driving　layer,　the　sensing　layer　and　the　protective　layer.　The　driving　layer　is　made　of　nonconductive　materials　while　the　sensing　layer　is　made　of　conductive　materials　and　the　crack　length　in　substrate　surfaces　can　be　presented　by　the　variation　of　the　resistance　of　the　sensing　layer.　Nano-Cu　and　Polyurethane　were　applied　to　make　the　sensing　layer　and　the　driver　layer　respectively　in　the　present　study.,　The　thickness　of　the　driving　layer　and　the　sensing　layer　is　about　20　mu　m　and　15　mu　m　respectively,　while　the　width　of　the　sensing　layer　is　2　mm.　Based　on　the　specific　intelligent　coating　a　structure　health　monitoring　system　has　been　built,　and　it　is　found　that　the　flaw　in　substrate　as　small　as　0.　5　mm　could　be　detected　as　the　increment　of　the　resistance　of　the　sensing　layer　at　the　level　of　0.　06　Omega.