The invention embodiment discloses an insulator and relates to the technique field of electronic device. The insulator comprises an insulation tube, an insulation body, umbrella group and wire; the insulation tube has hollow structure; the wire is located in the hollow structure of the insulation tube; the umbrella group is arranged at the outer side of the insulation tube; the insulation body is formed in the insulation tube in axial direction, and a gap is formed between the insulation tube and the insulation body in radial direction, the wire is located in the gap for passing through the gap and passing through two ends of the insulation tube; two ends of the insulation tube are connected to the connecting piece; the first connecting end of the connecting piece is connected to the first connecting end of the insulation body, the connecting piece is provided with a second connecting end, which is connected to the connecting end of the insulation body. The yield of the insulator is raised for effectively saving and using the resource.