Insulated heat-shrinkable tape is made of backing sleeve and hot melt adhesive. When heating the surface, the outside part will shrink, and inside will melt, in order to make being protective electrical material sealed and insulated. Other, it has the character of making construction convenience and good application, and easy deprivation. Finally, it can be suitable for other insulated material. Functions: 1. To repair the cable sleeve and also to use with vertical heat-shrinkable sleeve. 2. To protect from water and to seal the cable heat-shrinkable sleeve. 3. To protect wire and to deal with the short circuit when crossing the tunnel in the ice environment. 4. To protect and insulate the shuffle equipment and bus bar.