Metal　shell　microcapsules　containing　liquid　4,4　＇-bis-methylene　cyclohexane　diisocyanate　(HMDI)　were　successfully　synthesized　by　plating　chemically　a　layer　of　Ni-P　alloy　on　microcapsules　surfaces.　The　metal　shell　occupied　around　66.0　wt%　of　final　microcapsules,　providing　great　potential　to　improve　microcapsules　robustness.　Final　microcapsules　with　diameters　of　184.3　+/-　41.7　mu　m　had　a　core　fraction　of　22.4　+/-　0.6　wt%.　The　final　microcapsule　shells　with　a　total　thickness　of　7.4　+/-　0.4　mu　m　was　a　three-layered　structure,　which　comprised　of　an　outer-layered　Ni-P　shell　with　a　thickness　of　5.5　+/-　0.2　mu　m,　a　medium-layered　PUF　shell　with　a　thickness　of　369.0　+/-　21.0　nm,　and　an　inner-layered　polyurea　shell　with　a　thickness　of　1.7　+/-　0.2　mu　m.　More　interestingly,　final　microcapsules　remained　stable　core　fraction　and　morphologies　in　most　regular　solvents　including　low　polar　organic　solvents,　high　polar　organic　solvents,　and　water.　The　shell　strength　of　final　microcapsules　was　28.5　+/-　10.3　MPa,　comparing　with　6.6　+/-　2.5　MPa　of　polymer　shells.　Moreover,　the　modulus　of　epoxy　composites　was　stable　relatively　with　microcapsules　concentrations.　Scratched　self-healing　epoxy　coatings　showed　satisfactory　anticorrosion　performance　in　salty　water　(1　M).