The continuous busbar protection heat shrinkable sleeve is made of environmentally friendly polyolefin heat shrinkable material that is cross-linked by high-energy electron beam bombardment. It possesses excellent flame retardancy, insulation, and thermal stability, and can provide high insulation strength and resistance to electrical carbon tracking. It restricts the use of environmentally harmful substances such as PBB, PBBD, PBBE, and heavy metals, and does not produce toxic gases or harmful substances during combustion. It is suitable for corrosion prevention and insulation protection of busbars and electrical equipment, and 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.