The continuous flexible busbar heat-shrinkable tube is made of environmentally friendly thermoplastic elastomer-modified polyolefin heat-shrinkable material, which is cross-linked by high-energy electron beam bombardment. It not only exhibits excellent flame retardancy, insulation, thermal stability, and insulation strength but also boasts soft texture and good elasticity, making it more convenient to use. The product restricts the use of environmentally harmful substances such as PBB, PBBD, PBBE, and heavy metals. It does not produce toxic gases or harmful substances during combustion and is suitable for corrosion and insulation protection of busbars and electrical equipment. It has been certified by the Wuhan High Voltage Research Institute and the Xi'an High Voltage Research Institute. The product is widely used in the power industry, communications, automotive, marine, aircraft manufacturing, and other fields.