A long and thin decorative lighting part is attached to an electrical wire guiding body without causing a hindrance to curving deformation of the electrical wire guiding body. An electrical wire guiding apparatus includes a long and thin electrical wire guiding body that receives insertion of a wire harness (electrical wires) and can undergo curving deformation, and holders, each of which has lock portions (leg portions and locking end portions) that can be locked to the outer surface of the electrical wire guiding body, and a holding portion that can hold a decorative lighting part. When the decorative lighting part is to be attached to the electrical wire guiding body, it is sufficient to hold the decorative lighting part in the holders and then lock the holders to the electrical wire guiding body.