Usource High thermal conductivity distributed temperature measurement optical cable is a kind of high-performance temperature measurement optical cable; On the one hand, the optical cable adopts thermal conductivity insulation composite materials with a thermal conductivity of more than 1.0W; on the other hand, the optical cable manufacturing process is optimized, and the ultra-micro outer diameter stainless steel hose is used for packaging, and the overall outer diameter of the optical cable is less than 3MM, so that its thermal conductivity type is far better than the general temperature measurement optical cable, which greatly shortens the sensing time of the sensing fiber to the external temperature change, thereby reducing the design cost and difficulty of the optical fiber distributed temperature measurement host. This kind of optical cable is suitable for most temperature measurement occasions, especially suitable for occasions with high response time, high temperature resolution and high spatial resolution.