To cut down the cost of the laying work of a cable and to shorten the time required for the work.

A cut 6 is formed at the circumferential position of an inner pipe 1a. The cable 4 and the inner pipe 1a are concurrently drawn into a duct 3 while feeding the cable 4 into the inner pipe 1a via a part that is formed by spreading the cut 6 by using a jig 7. The purpose is accomplished by employing such a laying method as above.