Cable protection joint sleeve is a new type of sleeve material widely used in power engineering. With the rapid development of power cable buried laying project, higher requirements are put forward for cable sleeve. Cable protective sleeve is made of polyethylene PE and high-quality steel pipe through sand blasting pretreatment, plastic dipping or coating, heating and curing process. It is the most commonly used electrical insulating tube to protect wires and cables. It is widely used because it has good insulation performance, high chemical stability, no rust, no aging and can adapt to harsh environment. To protect cables and use electricity safely, new cable protection sleeves are now developed, which can also save resources.