The invention relates to a memory metal optical fiber puncture needle tube, which comprises an optical fiber. The optical fiber is composed of a body part and a head part. The head part includes a straight head and a tapered head with gradually decreasing diameter formed by a tapering process. The periphery of the body part is wrapped with a main pipe. The periphery of the straight head is wrappedwith a metal jacket. The periphery of the tapered head is wrapped with a segmented needle head made of memory metal. The meal jacket is fixedly connected with the segmented needle head. The segmentedneedle head is composed of a plurality of conical segments. The puncture needle tube can realize the purpose of fast transmission in long blood vessels through the synergistic action of the components, for example, the puncture needle tube can smoothly pass through a blood vessel of nearly two meters. The puncture needle tube can achieve higher light output efficiency and a better therapeutic effect, and has important application value and significance in photodynamic tumor treatment. Moreover, the puncture needle tube can be used in other fields, such as blood vessel blockage elimination orblood vessel puncture.