This　study　aims　to　enhance　the　oxidation　resistance　of　ceramic　coatings　through　designing　and　optimizing　microstructure.　A　series　of　double-layered　lanthanum-cerium　oxide　(LC)　and　8　wt%　yttria-partially-stabilized　zirconia　(YSZ)　coatings　with　different　thickness　ratios　were　tailored.　The　isothermal　oxidation　experiment　and　molecular　dynamics　simulation　results　suggested　that　due　to　the　lower　oxygen　ionic　diffusion　coefficient,　double-layered　LC/YSZ　coatings　exhibited　an　excellent　antioxidation　property　compared　to　the　single-layer　YSZ　coating.　However,　with　the　increase　of　LC　layer　thickness　in　LC/YSZ　coatings,　sintering-induced　vertical　cracks　were　easily　formed　within　LC　layer,　which　significantly　shortened　the　oxidation　resistance　of　LC/YSZ　coatings　by　a　burner　rig　test　at　1225　degrees　C.　The　equivalent　thermal　growth　oxide　thickness　manifested　that　the　optimum　thickness　ratio　between　LC　and　YSZ　layers　was　1:2.