Cross-linking　frequently　enhanced　the　mechanical　properties　of　linear　polymeric　materials;　however,　it　also　resulted　in　the　transition　from　thermoplastic　to　thermosetting　materials,　which　posed　issues　from　an　environmental　perspective.　Thermoplastic　polyurethane　(TPU)　elastomers　were　extensively　applied　across　various　industries.　To　improve　the　mechanical　properties　of　TPU　while　preserving　its　environmental　benefits,　this　study　integrated　radical　copolymerization　technology　to　develop　a　reversible　crosslinked　TPU.　Specifically,　the　linear　polyurethane　molecular　chains　were　crosslinked　using　diallyl　disulfide　(DADS)　as　a　functional　cross-linking　monomer.　Through　radical　copolymerization　reactions,　reversible　crosslinks　formed　from　disulfide　bonds　were　created　between　the　linear　polyurethane　molecular　chains,　yielding　a　self-healing　reversible　crosslinked　thermoplastic　polyurethane　(DSTPU).　The　study　showed　that　DSTPU　could　self-heal　and　dissolve　under　UV　light　and　alkaline　N,N-dimethylformamide　(DMF)　conditions,　achieving　82.2%　self-healing　efficiency　at　3　phr　DADS.　It　dissolved　into　fine　particles　in　alkaline　DMF.　Disulfide　bonds　in　DSTPU　enhanced　cross-linking,　boosting　19%　oxygen　permeability,　thermal　conductivity　(0.218　W/(m·K)),　and　mechanical　properties　like　tensile　stress　(11.18　MPa),　force　(134.13　N),　and　elongation　(548%).　These　bonds　also　enhanced　aging　resistance,　cutting　∆YI　to　6.0%.　©　BME-PT.