Insulating pipe sleeve

Provided is an insulating pipe sleeve. The pipe sleeve is provided with a middle hole. The pipe sleeve sleeves a grounding wire strip through the middle hole. After being heated, the pipe sleeve integrally contracts and tightly wraps the outer part of the grounding wire strip. The pipe sleeve comprises an insulating layer and an adhesive layer from outside to inside on the thickness section. The front side of the pipe sleeve is provided with an identification layer. The identification layer is arranged on the surface of the insulating layer. Color blocks in two colors are arranged at an interval on the identification layer. The surface of the insulating layer is provided with an anti-cracking structure. The insulating pipe sleeve is easy to operate, long in service lifetime, high in safety, insulating and reliable, and integrally portable.