Flame-retardant wire harness sheath for new energy automobile

The utility model provides a flame-retardant wire harness sheath for a new energy automobile, which comprises a first sheath tube body arranged corresponding to the middle of a wire harness and second sheath tube bodies respectively arranged at two ends of the first sheath tube body, and the second sheath tube bodies are arranged corresponding to wire harness connecting terminals at two ends of the wire harness. The inner diameter of the second sheath tube body is larger than that of the first sheath tube body, so that a dumbbell structure is formed; a positioning ring is arranged on the outer side wall of the second sheath tube body, and a positioning assembly is arranged on the positioning ring; the first sheath tube body and the second sheath tube body are respectively provided with a first waterproof layer, a first flame-retardant layer, a second waterproof layer and a second flame-retardant layer from inside to outside in sequence. The flame-retardant wire harness sheath for the new energy automobile has