In　order　to　meet　the　application　requirements　for　cables　in　different　environments,　it　is　imperative　to　develop　cable　tapes　with　insulation,　flame　retardancy,　and　high　strength.　In　this　work,　a　new　type　of　halogen-free　flameretardant　and　high-strength　coating　was　prepared　by　synthesizing　a　new　phosphoramide　flame　retardant　phenyl　P-methyl-N-(8-(methylamino)octyl)　phosphonamidate　(PPNPP)　compounded　with　silicon　wrapped　ammonium　polyphosphate　(SiAPP)　and　molybdenum　trioxide　(MoO3)　added　into　thermoplastic　polyurethane　(TPU),　and　TPU/glass　fiber　cloth　(GFC)　(TPU/G-X)　composites　were　obtained　by　double-sided　coating　on　the　surface　of　GFC　and　heat　curing.　Compared　with　those　of　the　pure　TPU-coated　sample,　the　peak　of　heat　release　rate　and　total　heat　release　results　of　the　TPU/G　composite　containing　20　wt%　SiAPP-PPNPP-MoO3　(TPU/G-SPM-1)　decreased　by　57.7　%　and　36.8　%,　respectively.　In　addition,　the　TPU/G-SPM-1　sample　showed　an　excellent　toxic　gases　suppression　effect,　i.e.　the　peak　of　carbon　monoxide　production　rate　and　total　carbon　monoxide　yield　decreased　by　91.4　%　and　98.9　%,　respectively,　compared　with　the　pure　sample.　The　coating　also　imparted　excellent　mechanical　properties　to　the　GFC,　which　overcame　the　original　defects　of　glass　fiber　such　as　poor　abrasion　resistance　and　brittleness,　and　the　tensile　strength　of　TPU/G-SPM-1　was　increased　by　101　%　compared　with　that　of　pure　GFC.　This　work　presents　a　new　method　for　the　preparation　of　flame-retardant　and　mechanically　strong　TPU/G-X　composites　used　as　cable　tapes.