The utility model provides an open type wire adapter sleeve belongs to the electric power wire and connects the repair technology field, and its technical essential lies in: including the body that has toughness, the body is the open structure of C type, offers the inserted block that is equipped with the slope form on the cross -section of slot, the other end in the open end section of body, is close to the slot on the surface of body and is close to inserted block department all to be equipped with one row of anti -skidding convex -concave arris groove. The utility model discloses set the body to the OPEN TYPE structures of C type, one end at the body is equipped with the slot, the other end is equipped with the inserted block, with the shunting wire junction of open type body cover at the main traverse line intermediate position during use, or wire broken position needs prosthetic junction, the dedicated crimping tool of rethread makes the inserted block insert in the slot, make theboth ends of body connect closedly, thereby realize the connection of the department of heavy current branch of main traverse line intermediate position or the connection restoration of damaged department, it is connected closely, it is simple and efficient to handle, labour saving and time saving.