The invention discloses an annular construction power distribution network wiring structure, which adopts an annular power distribution backbone network. A branch feeder line loop is equipped with dual-path incoming switches. The annular power distribution backbone network is firm in frame and high in power supply reliability; the network is concise in structure, is obvious in hierarchy and convenient to manage, is suitable for the power distribution network of various single power sources , multiple power sources, various loads and multichannel feeder lines, and is high in universality; the wiring structure is simple in wiring and needs small number of devices, is flexible and simple to run, is safe and simple to operate, is easy to expand and is high in flexibility; through general device, the effects of easy purchase, running, operation and maintenance are achieved; and the technical and economic performance is good and adaptability is good.