To provide a wiring method and a wiring structure allowing wiring construction to be easily carried out by improving flexibility of a transmission cable for transmitting a signal such as an optical fiber cable or a LAN cable to reduce stress and tension acting on a signal transmission medium wire.

For instance, a secondary coating 13 is formed around a primary coating 12 of an optical fiber 11 being the signal transmission medium, and the center Cf of the optical fiber 11 is arranged at a position distant by Lf from the center Cc in the width direction of the secondary coating 13. When an optical fiber cable 10 is bent, a slit part is formed in the width direction from one end of the secondary coating without the optical fiber 11 disposed thereat, and the optical fiber cable is bent in the vicinity of the slit part to form a bent part A. When a marking such as a step is provided to the secondary coating, the position of the cable can easily be recognized, and a mistake in construction can be reduced without damaging the cable by piercing of a push pin when the cable is fixed to a wall or the like.