The invention belongs to the field of a power distribution tool and particularly relates to a bare cable isolation sleeve. The bare cable isolation sleeve has the characteristics of simple, practicaland convenient structure and good isolation effect; meanwhile, the isolation sleeve can be freely combined on the basis of existing single use so as to meet more and more complex working contents; invarious different use environments, working efficiency can be improved; the scheme is low in cost; the bare cable isolation sleeve not only has a passive isolation effect, but also can be further expanded to have active protecting and alarming effects, so that a use effect of the isolation sleeve is further improved, and use occasions of the bare cable isolation sleeve are expanded; a combined structure of the bare cable isolation sleeve can conveniently and rapidly achieve a neat and uniform board effect and consistency of working contents is improved; and the bare cable isolation sleeve hasa promoting effect on normalization and integration on various works of power distribution operation and the like.