Field control field low smoke halogen-free flame retardant thermoplastic polyurethane elastomer sheath material with excellent toughness and wear resistance, oil resistance, low temperature flexible, elastic and thermal stability, and can be widely applied to soft, abrasion resistance, oil resistance of communication cable, wind power cables, marine cables, power cables, locomotive cable, automotive cable, exploration cable has the excellent mechanical properties and chemical resistance properties. It has good processing performance, after extrusion surface is very delicate, but also has good oil resistance, abrasion resistance and mildew resistance, widely used in communication cable, wire and cable, railway, automobile and other fields. In line with the RoHS directive requirements.