To provide the arrangement structure of a water supply pipe, which allows the alteration in location of a water supply instrument or the replacement to another instrument to be performed without splicing of the water supply pipe.

In the arrangement structure of a water supply pipe connected to a water supply instrument, the water supply pipe is formed of a flexible material and drawn into the inner part of a building at a position apart from the connection position to the water supply instrument so as to be arranged in an arcuate form or in a spiral form within a wall from the draw-in position to the connection position to the water supply instrument.